US8482223B2 - Calibration of lamps - Google Patents
Calibration of lamps Download PDFInfo
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- US8482223B2 US8482223B2 US12/433,222 US43322209A US8482223B2 US 8482223 B2 US8482223 B2 US 8482223B2 US 43322209 A US43322209 A US 43322209A US 8482223 B2 US8482223 B2 US 8482223B2
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/185—Controlling the light source by remote control via power line carrier transmission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Definitions
- the present invention relates in general to the field of signal processing, and more specifically to a system and method of calibrating lamps.
- LEDs Light emitting diodes
- LEDs are becoming particularly attractive as main stream light sources in part because of energy savings through high efficiency light output and environmental incentives such as the reduction of mercury.
- LEDs are semiconductor devices and are driven by direct current.
- the brightness (i.e. luminous intensity) of the LED approximately varies in direct proportion to the current flowing through the LED.
- increasing current supplied to an LED increases the intensity of the LED and decreasing current supplied to the LED dims the LED.
- Current can be modified by either directly reducing the direct current level to the white LEDs or by reducing the average current through duty cycle modulation.
- LEDs have component-to-component variation.
- the brightness of one LED compared to another LED can vary by an amount that is noticeable by a human.
- the variation between LEDs in different lamps can be sufficient to allow a human to notice a difference in the brightness of one lamp to another.
- FIG. 1A depicts a lamp calibration system 100 .
- lamp calibration system 100 allows the brightness of lamp 102 to be tested and, if desired, adjusted within a tolerance level.
- the tolerance level can be a specific value or a range of values.
- the lamp calibration system 100 includes a lamp 102 situated in proximity to a light meter 104 .
- the lamp 102 connects via exemplary power terminals 106 and 108 to voltage source 110 that supplies an alternating current (AC) supply voltage V AC — SUPPLY to lamp 102 .
- AC alternating current
- Each lamp 102 is calibrated so that the brightness of lamp 102 is within a predetermined brightness tolerance.
- the voltage source 110 is, for example, a public utility, and the AC supply voltage V AC — SUPPLY is, for example, a 60 Hz/110 V line voltage in the United States of America or a 50 Hz/220 V line voltage in Europe.
- Lamp 102 includes a power control circuit 112 that converts the supply voltage V AC — SUPPLY into a regulated link voltage V LINK and an output current i OUT .
- the link voltage is, for example, an approximately constant voltage having a regulated value between 200V and 400V.
- the power control circuit 112 includes a lamp driver 114 .
- the lamp driver 114 is a switching power converter, such as a buck converter, boost converter, or a buck-boost converter.
- Lamp driver 114 includes a switch (not shown), and a duty cycle of the switch is controlled by a switch control signal CS 0 generated by controller 116 .
- An exemplary power control circuit is described with reference to FIGS. 1 and 2 of U.S. patent application Ser. No. 11/967,269, entitled Power Control System Using A Nonlinear Delta-Sigma Modulator With Nonlinear Power Conversion Process Modeling, filed on Dec. 31, 2007, inventor John L. Melanson, and assignee Cirrus Logic, Inc.
- U.S. patent application Ser. No. 11/967,269 is referred to herein as “Melanson I” and is hereby incorporated herein in its entirety.
- FIG. 1B depicts lamp calibration system 150 , which represents a physical embodiment of lamp calibration system 100 .
- Lamp 124 represents an exemplary physical embodiment of lamp 102 .
- Lamp 124 is physically placed in a test apparatus 126 and connected to voltage source 110 .
- Power control circuit supplies the output current i OUT to light source 118 to cause each of one or more LEDs in light source 118 to illuminate.
- Light meter 104 detects the light 119 generated by light source 118 and displays an indication of the brightness of light source 118 on display 120 .
- Power control circuit 112 includes a trim module 122 that can be adjusted to vary the brightness of lamp 124 so that the brightness of lamp 102 as indicated by light meter 104 is within the predetermined brightness tolerance.
- Power control circuit 112 is connected to housing 128 via power wires 132 of lamp 124 .
- lamp 124 is partially disassembled by disconnecting housing 128 from lamp cover 130 . Exposing the trim module 122 allows access to the trim module 122 and allows adjustment of the trim module 122 to adjust the brightness of lamp 124 . After adjustment, lamp 124 is reassembled.
- Partially disassembling lamp 124 , adjusting the trim module 122 , and reassembling lamp 124 results in a time consuming calibration process that is generally not conducive to manufacturing lamps in commercial volumes at competitive prices. Additionally, some conventional lamps 102 have inaccessible power control circuits and, thus, are not calibrated. Thus, it is desirable to have a different manner of calibrating a lamp.
- an apparatus in one embodiment, includes a controller configured to generate one or more power control signals for a lamp, wherein the controller is further configured to receive lamp calibration data received via one or more power terminals of the lamp and to process the calibration data to calibrate the lamp.
- a method in another embodiment, includes receiving lamp calibration data via one or more power terminals of a lamp and processing the lamp calibration data to calibrate the lamp. The method further includes generating one or more power control signals for the lamp using the calibration data.
- an apparatus in a further embodiment of the present invention, includes calibration unit configured to send calibration data for calibrating a lamp to one or more power terminals of a lamp.
- FIG. 1A (labeled prior art) depicts a lamp calibration system.
- FIG. 1B (labeled prior art) depicts an embodiment of the lamp calibration system of FIG. 1A .
- FIG. 2 depicts a lamp calibration system.
- FIG. 3 depicts a lamp calibration system that receives supply voltage/calibration data via power terminals of a lamp.
- FIG. 4 depicts a calibration unit embodiment for the lamp calibration system of FIG. 2 .
- FIG. 5 depicts a switch of the calibration unit of FIG. 4 .
- FIG. 6 depicts exemplary phase modulated waveforms of a supply voltage/calibration data of the calibration unit of FIG. 4 .
- FIG. 7 depicts a high speed calibration unit embodiment for the lamp calibration system of FIG. 2 .
- FIG. 8 depicts a high speed switch for the high speed calibration unit of FIG. 7 .
- FIG. 9 depicts a respective high speed switch system for the high speed calibration unit of FIG. 7 .
- FIG. 10 depicts exemplary high speed encoding of supply voltage/calibration data by a calibration modulation signal of the high speed calibration unit of FIG. 7 .
- FIG. 11 depicts an embodiment of a controller of the lamp calibration system of FIG. 2 .
- FIG. 12 depicts a decoder of the controller of FIG. 11 .
- FIG. 13 depicts a lamp driver controller of the controller of FIG. 11 .
- FIG. 14 depicts a state diagram for a processor of the controller of FIG. 11 .
- FIG. 15 depicts an embodiment of a lamp.
- a lamp in at least one embodiment, includes a controller configured to generate power control signals for a lamp is also configured to receive lamp calibration data received via one or more power terminals of the lamp. The controller is configured to process the calibration data to calibrate the lamp.
- a calibration system energizes the lamp to allow a light meter to measure the light emitted from the lamp under normal operating conditions.
- the lamp includes one or more light emitting diodes (LEDs) that emit the light.
- the light meter provides light data to the calibration unit.
- the light data measures one or more properties of the light such as brightness and dominant optical wavelength.
- the calibration unit determines whether the light data indicates that the lamp is within tolerances.
- the lamp receives power from a voltage source via power terminals.
- the calibration unit generates calibration data for the controller and modulates the voltage supplied to the lamp to send the calibration data to the controller.
- the lamp receives the calibration data via the power terminals.
- the controller includes a decoder that decodes the calibration data.
- the controller includes a processor to process the calibration data to calibrate the lamp.
- the voltage supplied to the lamp during calibration is an AC supply voltage.
- the calibration unit modulates the AC supply voltage to encode the calibration data in the supply voltage so that the supply voltage is converted into a supply voltage and data signal.
- the calibration unit modulates the supply voltage by using phase modulation and encodes the calibration data in the resulting phase angles.
- the controller already includes a timer to detect phase angles associated with dimming of the lamp during normal use. The output of the timer can be used to decode the calibration data.
- the voltage to the lamp during calibration is a high speed, pulse width modulated (PWM) supply voltage signal.
- PWM pulse width modulated
- the duty cycle of the PWM signal is modified to encode the calibration data.
- the peak voltage of the PWM signal is adjusted in accordance with the pulse width modulation so that an average peak value of the supply voltage signal provides the voltage level used to turn the lamp “ON”.
- FIG. 2 depicts a lamp calibration system 200 that includes a controller 202 configured to generate power control signals CS 1 and CS 2 for lamp 204 and to receive lamp supply voltage/calibration data V SUPPLY/DATA .
- lamp calibration system 200 allows one or more properties of lamp 102 to be tested and, if desired, adjusted to a tolerance level.
- the tolerance level can be a specific value or a range of values.
- controller 202 is an integrated circuit fabricated on a semiconductor wafer. In other embodiments, controller 202 is fabricated using discrete components or a combination of integrated and discrete components. Controller 202 can be analog, digital, or mixed analog and digital.
- controller 202 can be configured to generate any number of control signals to control the link voltage V LINK and the current or currents in light source 216 .
- multiple currents flow in light source 216 to respectively illuminate separate sets of light emitting sources, such as LEDs.
- Voltage source 212 provides a supply voltage V SUPPLY .
- the supply voltage V SUPPLY can be an alternating current (AC) or a direct current (DC) voltage.
- power control circuit 214 generates a link voltage V LINK and supplies power to light source 216 .
- control signal CS 1 controls the link voltage V LINK .
- Power control unit 214 also supplies an output current i LS to light source 216 to cause light source 216 to emit light 218 .
- control signal CS 2 controls an average value of the output current i LS .
- power control unit 214 controls a switch (such as switch 1522 in FIG. 15 ) in light source 216 that directly controls the output current i LS in light source 216 .
- Light source 216 can be any type of light source. In at least one embodiment, light source 216 includes one or more sets of one or more LEDs.
- Light meter 220 detects the light emitted from light source 216 and generates a lighting data signal LDATA.
- the lighting data signal LDATA contains data representing the property(ies) of the light 218 as determined by light meter 220 .
- the lighting data signal LDATA contains data representing the brightness of light source 216 .
- the light meter 220 provides the lighting data signal LDATA to calibration unit 210 .
- the calibration unit 210 processes the lighting data signal LDATA and determines whether each property of the light 218 , as reported by the lighting data signal LDATA, is within a predetermined tolerance. If the lamp 204 emits light 218 within tolerance, calibration unit 210 provides an indication that lamp 204 is ready for use.
- the “ready for use” indication can be a visual cue or an electronic signal provided to an automated test apparatus ( FIG. 3 ), which then removes the lamp 204 and replaces lamp 204 with another lamp for calibration. If the light 218 is not within tolerance, calibration unit 210 determines calibration data to be sent to lamp 204 . The calibration data notifies controller 202 of changes to be made by lamp 204 that will bring lamp 204 into within a tolerance level or at least closer to a tolerance level.
- Calibration unit 210 sends the calibration data to controller 202 by modulating the supply voltage V SUPPLY to generate supply voltage/calibration data V SUPPLY/DATA .
- Data signal V SUPPLY — D represents the data encoded in supply voltage/calibration data V SUPPLY/DATA .
- data signal V SUPPLY — D is a direct one-to-one observation of supply voltage/calibration data V SUPPLY/DATA .
- data signal V SUPPLY — D is observed across a sampling resistor (not shown) to generate a scaled version of supply voltage/calibration data V SUPPLY/DATA .
- calibration unit 210 also sends header data to the controller 202 to cause controller 202 to enter a calibration mode.
- the header data is a sequence of bits that alerts the controller 202 that supply voltage/calibration data V SUPPLY/DATA includes calibration data to be decoded.
- the supply voltage/calibration data V SUPPLY/DATA is received by the lamp 204 via power terminals 206 and 208 .
- Calibration unit 210 can utilize any modulation technique, such as phase angle modulation and pulse width modulation, to encode the supply voltage/calibration data V SUPPLY/DATA with the calibration data. In at least one embodiment, during normal use, e.g.
- controller 202 is configured to cause lamp driver 222 to dim light source 216 by detecting phase angles of a phase modulated supply voltage.
- calibration unit 210 can encode the calibration data in the supply voltage/calibration data V SUPPLY/DATA by phase modulating the supply voltage V SUPPLY during the calibration mode, and controller 202 can utilize the same components used to detect the phase angles for dimming to decode the calibration data from the phase modulated supply voltage/calibration data V SUPPLY/DATA during a normal mode of use.
- phase modulating the supply voltage V SUPPLY to encode the calibration data in supply voltage/calibration data V SUPPLY/DATA limits the data transfer rate to lamp 204 to a multiple between 1 and 4 of the frequency f VSUPPLY of the supply voltage V SUPPLY .
- identically phase modulating each half cycle of the supply voltage V SUPPLY results in a data transfer rate of f VSUPPLY .
- Independently phase modulating the leading edge or trailing edge of each half cycle of the supply voltage V SUPPLY results in a data transfer rate of 2f VSUPPLY .
- Independently phase modulating the leading and trailing edges of each half cycle of the supply voltage V SUPPLY results in a data transfer rate of 4f VSUPPLY .
- the value of frequency f VSUPPLY is 60 Hz, and in Europe the value of frequency f VSUPPLY is 50 Hz.
- the maximum transfer rate is 240 Hz in the U.S. and 200 Hz in Europe.
- calibration unit 210 increases the data transfer rate of the calibration data by modulating a DC supply voltage V SUPPLY supplied by voltage source 212 .
- calibration unit 210 utilizes pulse width modulation to vary the duty cycle of supply voltage V SUPPLY .
- the value of the duty cycle encodes the calibration data.
- controller 202 includes a decoder, such as decoder 1200 ( FIG. 12 ), to detect each duty cycle of supply voltage/calibration data V SUPPLY/DATA and to recover the calibration data from the supply voltage/calibration data V SUPPLY/DATA .
- calibration unit 210 adjusts the peak voltage of the pulse width modulated supply voltage/calibration data V SUPPLY/DATA so that an average peak voltage of supply voltage/calibration data V SUPPLY/DATA provides sufficient operating voltage to lamp 204 .
- the data transfer rate of calibration data can be set at any value supported by calibration unit 210 and controller 202 .
- the data transfer rate can be set within a range of 1 kHz to 10 kHz.
- controller 202 stores the calibration data or data derived from the calibration data in memory 224 .
- Memory 224 can be separate from controller 202 as depicted in FIG. 2 or incorporated into controller 202 .
- memory 224 includes both volatile and nonvolatile storage devices.
- the controller 202 retrieves the stored calibration data from memory 224 and uses the calibration data to adjust the light 218 to within a tolerance level.
- the particular tolerance level is, for example, dependent upon the particular light source 216 and manufacturer specifications for the light source 216 .
- an example tolerance level is 600 lumens +/ ⁇ 10%, i.e. between 540 to 660 lumens.
- the manner in which controller 202 utilizes the calibration data to adjust the light 218 to within a tolerance level is a matter of design choice.
- the controller 202 receives a light source current feedback signal i LS — FB representing the current in light source 216 .
- controller 202 utilizes the calibration data as a target value to compare against the light source current feedback signal i LS — FB . The controller 202 then adjusts the control signal CS 1 so that lamp driver 222 drives the light source current feedback signal i LS — FB towards the target value indicated by the calibration data. In another embodiment, controller 202 utilizes the calibration data to modify the light source current feedback signal i LS — FB prior to comparison to a target value and then adjusts the control signal CS 1 so that lamp driver 222 drives the light source current feedback signal towards the target value. Because calibration of the lamp 204 does not require physical access to the power control circuit 214 , lamp 204 can be calibrated while fully assembled.
- the lamp 204 is configured to send information to another device, such as calibration unit 210 or any other device that can receive and decode data.
- the information is related to lamp 204 , such as an internal temperature of lamp 204 , the value of calibration data stored in memory 204 (such as calibration data CAL_DATA in FIG. 13 ), the serial number of lamp 204 , hours of use, and/or date of manufacture.
- lamp 204 sends data by pulsing light source 216 .
- the pulses of light 218 represent information.
- lamp 204 responds to a request by calibration unit 210 to send specific information.
- calibration unit 210 is configured to request information from lamp 204 , such as the internal temperature of lamp 204 , the value of calibration data stored in memory 204 (such as calibration data CAL_DATA in FIG. 13 ), or any other data that is, for example, determined by lamp 204 or stored in memory 224 .
- controller 202 is configured to encode the data as pulses of light 218 .
- Light meter 220 detects the pulses of light 218 and sends lighting data signal LDATA.
- the value of lighting data signal LDATA represents the pulses of light 218 .
- Calibration unit 210 decodes the lighting data signal LDATA to obtain the requested information.
- lamp 204 pulses light 218 without receiving a request, such as in response to internal programming of controller 202 .
- Light 218 can be pulsed by, for example, turning the light source 216 “on” and “off” or by varying the intensity of light 218 .
- the pulses of light 218 represents a packet of data that informs the data recipient, such as calibration unit 210 , of, for example, that data is being sent, the type of data, and the value of the information of interest represented by the data.
- calibration unit 210 encodes supply voltage/calibration data V SUPPLY/DATA with a request that lamp 204 provide the calibration data CAL_DATA stored in memory 224 .
- Controller 202 decodes the request, retrieves the value of the calibration data CAL_DATA from memory 224 , commands lamp driver 222 to cause light source 216 to pulse light 218 in accordance with a response packet of data.
- the response packet includes the data responsive to the request of calibration unit 210 and can include other data to allow calibration 210 to identify and verify the response.
- the response packet contains three blocks of data respectively consisting of a key sequence to identify the response, the responsive data, and verification data.
- the calibration unit 210 requests the value of calibration data CAL_DATA stored in memory 224 , the key sequence is 110110111, the calibration data CAL_DATA has a binary value of “10011”, and a summation of the key sequence and the calibration data CAL_DATA (referred to as a “checksum”) has a binary value of 111001010.
- Lamp 204 responds to the request by pulsing light 218 with a sequence 11011011110011111001010.
- each pulse has a predetermined duration known to both the controller 202 and calibration unit 210 , and pulses representing a binary “0” have a different brightness than pulses representing a binary “1”.
- the length of data in the response packet, the configuration of the packet, the coding of data in the packet, and any other parameter related to the packet are matters of design choice.
- FIG. 3 depicts lamp calibration system 300 , which represents one embodiment of lamp calibration system 200 .
- lamp 302 represents one embodiment of lamp 204 .
- Lamp 302 includes power terminals 304 and 306 to receive supply voltage/calibration data V SUPPLY/DATA during calibration.
- the power control circuit 214 is located in housing 308
- light source 216 is located in translucent cover 310 .
- the lamp 302 is either manually or automatically positioned in test apparatus 312 for calibration.
- light meter 220 is mounted within test apparatus 312 .
- FIG. 4 depicts calibration unit 400 , which represents one embodiment of calibration unit 210 .
- Calibration unit 400 includes a calibration controller 402 that receives lighting data signal LDATA and target light value TLV.
- the target light value TLV is stored in a memory (not shown).
- the value of target light value TLV represents the target value of lighting data signal LDATA.
- Calibration unit 400 compares the target light value TLV with the lighting data signal LDATA and generates calibration modulation signal CAL_MS.
- Switch 404 is connected between voltage source 406 and power terminal 206 .
- the calibration modulation signal CAL_MS operates switch 404 to phase modulate the AC voltage supply V SUPPLY to generate supply voltage/calibration data V SUPPLY/DATA .
- the particular phase angle of each half cycle of supply voltage/calibration data V SUPPLY/DATA represents either a logical “1” or a logical “0”.
- the calibration modulation signal CAL_MS encodes data, including calibration data, as a binary bit stream in the supply voltage/calibration data V SUPPLY/DATA by controlling the phase angles in the phase modulated supply voltage/calibration data V SUPPLY/DATA .
- the calibration controller 402 samples the voltage supply V SUPPLY and phase locks to the voltage V SUPPLY to allow calibration modulation signal CAL_MS to accurately generate the phase angles in supply voltage/calibration data V SUPPLY/DATA .
- phase modulation by calibration controller 402 is a matter of design choice.
- Calibration controller 402 can be configured to identically phase modulate each half cycle of supply voltage V SUPPLY or independently modulate leading, trailing, or both leading and trailing edges of each half cycle of voltage supply V SUPPLY .
- phase modulation encoding schemes can be used to encode supply voltage/calibration data V SUPPLY/DATA with calibration data.
- calibration controller 402 can be configured to phase modulate leading edges of each half cycle of a cycle of supply voltage V SUPPLY to encode a logical “1” and phase modulate trailing edges of each half cycle of supply voltage V SUPPLY to encode a logical “0”.
- the particular type of phase modulation encoding scheme is a matter of design choice.
- FIG. 5 depicts switch 500 to phase modulate supply voltage V SUPPLY .
- Switch 500 represents one embodiment of switch 404 .
- Two insulated gate bipolar junction transistors (IGBTs) 502 and 504 with connected emitters form switch 500 to allow calibration controller 402 to phase modulate each half cycle of supply voltage V SUPPLY .
- Calibration controller 402 provides calibration modulation signal CAL_MS to the gates of IGBTs 502 and 504 to control conductivity of IGBTs 502 and 504 . Controlling the conductivity of IGBTs 502 and 504 controls the phase angles of supply voltage V SUPPLY .
- switch 404 is a triac device.
- FIG. 6 depicts exemplary phase modulated waveforms of supply voltage/calibration data V SUPPLY/DATA .
- phase angles indicating logical “0” and logical “1” are sufficiently separated to avoid overlap and, thus, ambiguity as to the encoded data.
- phase angles from 0° to 45° in the first half cycle and phase angles from 180° and 225° of supply voltage/calibration data V SUPPLY/DATA indicate a logical “0”.
- Phase angles from 135° to 180° in the first half cycle and phase angles from 315° and 360° of supply voltage/calibration data V SUPPLY/DATA indicate a logical “1”.
- Exemplary supply voltage/calibration data V SUPPLY/DATA 604 encodes “0110”.
- Exemplary supply voltage/calibration data V SUPPLY/DATA 606 encodes “10” by phase modulating trailing edges of each half cycle of a cycle supply voltage/calibration data V SUPPLY/DATA followed by phase modulating leading edges of each half cycle.
- FIG. 7 depicts calibration unit 700 , which represents one embodiment of calibration unit 210 .
- Calibration unit 700 includes calibration controller 702 .
- Calibration controller 702 compares the lighting data signal LDATA with the target light value TLV as previously described to determine the calibration data to provide to controller 202 ( FIG. 2 ) so as to bring lamp 204 within a tolerance level.
- Calibration controller 702 generates a pulse width modulated calibration modulation signal CAL_CS to control the duty cycle of high speed switch system 704 .
- Voltage source 706 supplies a DC supply voltage V DD to high speed switch system 704 .
- Voltage source 706 represents one embodiment of voltage source 212 ( FIG. 2 ).
- High speed switch(es) 704 modulate the supply voltage V DD to generate a pulse width modulated supply voltage/calibration data V SUPPLY/DATA .
- Variations in the duty cycle of calibration modulation signal CAL_CS represent encoded binary data in supply voltage/calibration data V SUPPLY/DATA .
- the frequency of calibration modulation signal CAL_CS determines the data transfer rate of supply voltage/calibration data V SUPPLY/DATA .
- the data transfer rate using calibration controller 702 can be much larger than the data transfer rate achievable with calibration unit 400 because the data transfer rate of calibration controller 702 is dependent on the frequency of calibration modulation signal CAL_CS and responsiveness of high speed switch system 704 rather than on the frequency of the supply voltage V SUPPLY .
- FIG. 8 depicts high speed switch system 800 , which represents one embodiment of high speed switch system 704 .
- the calibration modulation signal CAL_CS is applied directly to the gate of n-channel field effect transistor (FET) 802 and indirectly to the gate of n-channel FET 804 through inverter 806 .
- Resistor 808 limits the current supplied by voltage source 706 ( FIG. 7 ). Referring to FIGS. 2 and 9 , the value of resistor 808 is selected so that an adequate amount of current i LS is supplied to light source 216 to generate a desired brightness of light 218 . Referring to FIG.
- the duty cycle of each pulse of supply voltage/calibration data V SUPPLY/DATA tracks the duty cycle of each pulse of calibration modulation signal calibration modulation signal CAL_CS.
- the data indicated by the duty cycle of each pulse of calibration modulation signal CAL_CS is encoded in supply voltage/calibration data V SUPPLY/DATA .
- FIG. 9 depicts high speed switch system 900 , which also represents one embodiment of high speed switch system 704 .
- the calibration modulation signal CAL_CS is applied directly to the gate of n-channel FET 902 .
- Resistor 904 limits the current supplied by voltage source 706 ( FIG. 7 ).
- the value of resistor 808 is selected so that an adequate amount of current i LS is supplied to light source 216 to generate a desired brightness of light 218 .
- the duty cycle of each pulse of supply voltage/calibration data V SUPPLY/DATA tracks the duty cycle of each pulse of calibration modulation signal calibration modulation signal CAL_CS.
- high speed switch system 900 contains fewer components than high speed switch system 800 . However, unlike high speed switch system 800 , current flows in high speed switch system 900 regardless of the logical value of calibration modulation signal CALIBRATION MODULATION SIGNAL CAL_CS, which is generally less efficient.
- FIG. 10 depicts exemplary encoding of supply voltage/calibration data V SUPPLY/DATA by calibration modulation signal CAL_CS.
- calibration controller 702 duty cycle modulates calibration modulation signal CAL_CS to encode calibration data in supply voltage/calibration data V SUPPLY/DATA based on the comparison between the lighting data LDATA and the target light value TLV.
- a duty cycle of calibration modulation signal CAL_CS greater than or equal to 75% represents a logical “1”
- a duty cycle less than or equal to 25% represents a logical “0”.
- the exemplary calibration modulation signal CAL_CS 1002 represents binary data “10100”.
- Calibration unit 700 modulates the supply voltage V DD to encode supply voltage/calibration data V SUPPLY/DATA 1004 with the same binary data as calibration modulation signal CAL_CS 1002 .
- the peak voltage V PEAK of supply voltage/calibration data V SUPPLY/DATA is maintained so that the average voltage of supply voltage/calibration data V SUPPLY/DATA provides sufficient operating voltage to lamp 204 .
- FIG. 11 depicts controller 1100 , which represents one embodiment of controller 202 .
- Controller 1100 includes two controllers, lamp calibration controller 1101 and lamp driver controller 1110 .
- Lamp calibration controller 1101 is active during calibration mode to allow controller 1100 to calibrate lamp 204 .
- lamp calibration controller 1101 is inactive after completion of calibration.
- lamp calibration controller 1101 is used to decode and process dimming levels indicated by phase angles in V SUPPLY — D during normal use.
- Lamp driver controller 1110 generates control signal CS 1 to control lamp driver 222 and generates control signal CS 2 to directly control current in light source 216 .
- Lamp calibration controller 1101 receives data signal V SUPPLY — D , which contains the data encoded in supply voltage/calibration data V SUPPLY/DATA .
- the supply voltage/calibration data V SUPPLY/DATA received by lamp driver controller 1110 is a sampled version of supply voltage/calibration data V SUPPLY/DATA .
- data signal V SUPPLY — D is supply voltage/calibration data V SUPPLY/DATA .
- data signal V SUPPLY — D is a sampled value of supply voltage/calibration data V SUPPLY/DATA .
- data signal V SUPPLY — D is a sampled value of supply voltage/calibration data V SUPPLY/DATA sampled prior to any electromagnetic interference filtering.
- Decoder 1102 decodes the data encoded in data signal V SUPPLY — D and generates data signal D V .
- Processor 1104 processes data signal D V to determine the calibration data CAL_DATA provided by calibration unit 210 .
- controller 1100 utilizes the calibration data CAL_DATA to calibrate lamp 204 .
- Processor 1104 writes the calibration data CAL_DATA to nonvolatile memory 1106 and writes calibration data CAL_DATA to random access memory (RAM) 1108 during calibration and during normal use of lamp 204 .
- processor 1104 is a state machine.
- Lamp driver controller 1110 receives light source current feedback signal i LS — FB representing the current in light source 216 .
- lamp driver controller 1110 utilizes the calibration data CAL_DATA as a target value to compare against the light source current feedback signal i LS — FB .
- the lamp driver controller 1110 then adjusts the control signal CS 2 to drive the light source current feedback signal i LS — FB towards the target value indicated by calibration data CAL_DATA.
- the calibration data CAL_DATA indicates that light source 216 is not bright enough, lamp driver controller 1110 generates control signal CS 1 to cause lamp driver 216 to increase the current in light source 216 .
- the calibration data CAL_DATA indicates that light source 216 is too bright, lamp driver controller 1110 generates control signal CS 1 to cause lamp driver 216 to decrease the current in light source 216 .
- the calibration data CAL_DATA represents a predefined target value plus or minus an offset value.
- supply voltage/calibration data V SUPPLY/DATA supplies the offset value.
- calibration unit 210 encodes supply voltage/calibration data V SUPPLY/DATA in data packet 1112 .
- the particular data format of data packet 112 is a matter of design choice.
- data packet 1112 has a predetermined format of four data blocks.
- Data packet 1112 includes a key block 1114 .
- Key block 1114 contains a binary sequence that alerts lamp calibration controller 1101 to enter calibration mode.
- Data packet 1112 also includes a command block 1116 .
- the data in command block 1116 represents specific commands to be executed by processor 1104 .
- the CAL_DATA block 1118 contains the calibration data.
- the checksum block 1120 contains a checksum to allow processor 1104 to determine whether the data in supply voltage/calibration data V SUPPLY/DATA and data signal V SUPPLY — D are accurate or corrupted.
- FIG. 12 depicts decoder 1200 , which represents one embodiment of decoder 1102 .
- Comparator 1202 compares data signal V SUPPLY — D against a known reference 1203 .
- the reference 1203 is generally the cycle cross-over point voltage of data signal V SUPPLY — D , such as a neutral potential of voltage source 212 .
- the reference 1203 is a potential representing a logical zero.
- the timer 1204 counts the number of cycles of clock signal f clk that occur until the comparator 1202 indicates an edge of data signal V SUPPLY — D .
- Digital data D V represents the count. Since the frequency of data signal V SUPPLY — D and the frequency of clock signal f clk is known, the phase angle can be determined from the count of cycles of clock signal f clk that occur until the comparator 1202 indicates that an edge of data signal V SUPPLY — D is present, e.g. upon transition of a logical state of an output of comparator 1202 from one logical state to another. Likewise, the duty cycle can be determined from the count of cycle of clock signal f clk that occur between edges of data signal V SUPPLY — D .
- FIG. 13 depicts lamp driver controller 1300 , which represents one embodiment of lamp driver controller 1110 .
- Lamp driver controller 1300 receives calibration data CAL_DATA from RAM 1108 .
- Comparator 1304 compares the light source current feedback signal i LS — FB with calibration data CAL_DATA.
- the calibration data CAL_DATA is set so that when the light source current feedback signal i LS — FB matches the calibration data CALIBRATION DATA CAL_DATA, the brightness of light source 216 is within a tolerance level.
- Error signal i LS — E represents the difference between light source current feedback signal i LS — FB and calibration data CAL_DATA.
- the switch state controller 1302 if the error signal i LS — E indicates that light source current feedback signal i LS — FB is greater than calibration data CALIBRATION DATA CAL_DATA, the switch state controller 1302 is configured to generate control signal CS 1 to cause the current in light source 216 to decrease. Likewise, if the error signal i LS — E indicates that light source current feedback signal i LS — FB is less than calibration data CALIBRATION DATA CAL_DATA, the switch state controller 1302 is configured to generate control signal CS 1 to cause the current in light source 216 to increase.
- Melanson II and Melanson III are hereby incorporated by reference in their entireties.
- FIG. 14 represents state machine diagram 1400 , which represents one embodiment of a state machine for processor 1104 .
- RMS root mean square
- V SUPPLY/DATA — RMS a predetermined minimum supply voltage/calibration data
- processor 1104 enters a startup state 1402 . If the link voltage V LINK is greater than a minimum link voltage V LINK — MIN , the processor 1104 enters a normal use state 1404 .
- the predetermined minimum supply voltage/calibration data V SUPPLY/DATA — RMS _MIN is 90V RMS
- the minimum link voltage V LINK — MIN is 380 VDC.
- calibration unit 210 commands lamp calibration controller 1101 to temporarily write calibration data CAL_DATA to memory (such as memory 1106 ) until lamp 204 is within a tolerance level. In at least one embodiment, calibration unit 210 commands lamp calibration controller 1101 to permanently write calibration data CAL_DATA to memory (such as memory 1106 ) when lamp 204 is within a tolerance level. If the command is a “write” command, from the write CAL_DATA state 1412 processor 1104 writes the calibration data CAL_DATA to memory 1106 and then returns to the calibration program seek state 1408 .
- the command is a “burn” command
- processor 1104 burns the calibration data calibration data CAL_DATA to memory 1106 so that calibration data CAL_DATA is permanently stored in memory 1106 and then returns to the calibration program seek state 1408 .
- the “write” command allows the lamp 204 to undergo multiple calibration cycles and, thus, iterate the calibration data CAL_DATA until the lighting data signal LDATA indicates that lamp 204 is within a tolerance level.
- the number of calibration cycles is limited, and, upon reaching the limit, the lamp calibration system 200 indicates that the lamp 204 failed to operate with an acceptable tolerance level.
- calibration unit 210 sends the “burn” command if the lighting data signal LDATA indicates that lamp 204 is within an acceptable tolerance level.
- FIG. 15 depicts lamp 1500 , which represents one embodiment of lamp 204 .
- Full-bridge diode rectifier 1502 rectifies supply voltage/calibration data V SUPPLY/DATA into rectified supply voltage/calibration data V SDR .
- data signal V SUPPLY D is taken before electromagnetic interference (“EMI”) filter 1504 to avoid attenuation of data signal V SUPPLY — D by EMI filter 1504 .
- Switching power converter 1506 represents one embodiment of lamp driver 222 .
- Switching power converter 1506 is configured as a boost converter such that the inductor current i L in inductor 1508 ramps up when switch 1510 conducts, thus increasing the voltage across inductor 1508 .
- diode 1512 conducts, and inductor current i L charges capacitor 1514 to link voltage V LINK .
- diode 1512 prevents capacitor 1514 from discharging through switch 1510 .
- Controller 1516 represents one embodiment of controller 202 and lamp driver controller 1300 . Controller 1516 generates control signal CS 0 to provide power factor correction and regulate the link voltage V LINK . Exemplary power factor correction and regulation of the link voltage V LINK are described in U.S. patent application Ser. No. 11/967,269, entitled “Power Control System Using a Nonlinear Delta-Sigma Modulator with Nonlinear Power Conversion Process Modeling,” inventor John L. Melanson, and filed on Dec. 31, 2007 (referred to herein as “Melanson IV”) and U.S. patent application Ser. No. 11/967,275, entitled “Programmable Power Control System,” inventor John L. Melanson, and filed on Dec. 31, 2007 (referred to herein as “Melanson V”). Melanson IV and Melanson V are hereby incorporated by reference in their entireties.
- Controller 1516 also generates control signals CS 2 to control the current in LED string 1518 of light source 1520 .
- LED string 1518 includes one or more LEDs.
- the voltage across resistor 1530 is fed back as feedback signal i LS — FB to controller 1516 .
- the feedback signal i LS — FB represents the current in LED string 1518 .
- Controller 1516 generates CS 2 by comparing the feedback signal i LS — FB calibration data CALIBRATION DATA CAL_DATA as described with reference to lamp driver controller 1300 ( FIG. 13 ).
- Control signal CS 2 controls the duty cycle of switch 1522 to control the average lamp current i LS and, thus, control the brightness of LED string 1518 .
- Diode 1524 permits current flow in only one direction.
- Inductors 1526 and capacitor 1528 regulate the voltage across the LED string 1518 and provide filtering.
- a lamp includes a controller configured to generate power control signals for a lamp is also configured to receive lamp calibration data received via one or more power terminals of the lamp.
- the controller is configured to process the calibration data to calibrate the lamp.
Abstract
Description
Claims (33)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US12/433,222 US8482223B2 (en) | 2009-04-30 | 2009-04-30 | Calibration of lamps |
CN201080003746.8A CN102282913B (en) | 2009-04-30 | 2010-04-22 | Calibration of lamps using power line communication for sending calibration data |
ES10716959T ES2713063T3 (en) | 2009-04-30 | 2010-04-22 | Calibration of lamps that use communication by electric line for the sending of calibration data |
EP10716959.1A EP2425682B1 (en) | 2009-04-30 | 2010-04-22 | Calibration of lamps using power line communication for sending calibration data |
PCT/US2010/031978 WO2010126765A2 (en) | 2009-04-30 | 2010-04-22 | Calibration of lamps |
US13/430,554 US8680771B2 (en) | 2009-04-30 | 2012-03-26 | Controller customization system with phase cut angle communication customization data encoding |
Applications Claiming Priority (1)
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US12/433,222 US8482223B2 (en) | 2009-04-30 | 2009-04-30 | Calibration of lamps |
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Citations (240)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3316495A (en) | 1964-07-06 | 1967-04-25 | Cons Systems Corp | Low-level commutator with means for providing common mode rejection |
US3423689A (en) | 1965-08-19 | 1969-01-21 | Hewlett Packard Co | Direct current amplifier |
US3586988A (en) | 1967-12-01 | 1971-06-22 | Newport Lab | Direct coupled differential amplifier |
US3725804A (en) | 1971-11-26 | 1973-04-03 | Avco Corp | Capacitance compensation circuit for differential amplifier |
US3790878A (en) | 1971-12-22 | 1974-02-05 | Keithley Instruments | Switching regulator having improved control circuiting |
US3881167A (en) | 1973-07-05 | 1975-04-29 | Pelton Company Inc | Method and apparatus to maintain constant phase between reference and output signals |
US4075701A (en) | 1975-02-12 | 1978-02-21 | Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung | Method and circuit arrangement for adapting the measuring range of a measuring device operating with delta modulation in a navigation system |
GB2069269A (en) | 1980-02-11 | 1981-08-19 | Tektronix Inc | Supply voltage driver |
US4334250A (en) | 1978-03-16 | 1982-06-08 | Tektronix, Inc. | MFM data encoder with write precompensation |
US4409476A (en) | 1980-06-16 | 1983-10-11 | Asea Aktiebolag | Fiber optic temperature-measuring apparatus |
US4414493A (en) | 1981-10-06 | 1983-11-08 | Thomas Industries Inc. | Light dimmer for solid state ballast |
US4476706A (en) | 1982-01-18 | 1984-10-16 | Delphian Partners | Remote calibration system |
US4523128A (en) | 1982-12-10 | 1985-06-11 | Honeywell Inc. | Remote control of dimmable electronic gas discharge lamp ballasts |
US4677366A (en) | 1986-05-12 | 1987-06-30 | Pioneer Research, Inc. | Unity power factor power supply |
US4683529A (en) | 1986-11-12 | 1987-07-28 | Zytec Corporation | Switching power supply with automatic power factor correction |
US4700188A (en) | 1985-01-29 | 1987-10-13 | Micronic Interface Technologies | Electric power measurement system and hall effect based electric power meter for use therein |
US4797633A (en) | 1987-03-20 | 1989-01-10 | Video Sound, Inc. | Audio amplifier |
US4937728A (en) | 1989-03-07 | 1990-06-26 | Rca Licensing Corporation | Switch-mode power supply with burst mode standby operation |
US4940929A (en) | 1989-06-23 | 1990-07-10 | Apollo Computer, Inc. | AC to DC converter with unity power factor |
US4973919A (en) | 1989-03-23 | 1990-11-27 | Doble Engineering Company | Amplifying with directly coupled, cascaded amplifiers |
US4979087A (en) | 1988-09-09 | 1990-12-18 | Aviation Limited | Inductive coupler |
US4980898A (en) | 1989-08-08 | 1990-12-25 | Siemens-Pacesetter, Inc. | Self-oscillating burst mode transmitter with integral number of periods |
US4992919A (en) | 1989-12-29 | 1991-02-12 | Lee Chu Quon | Parallel resonant converter with zero voltage switching |
US4994952A (en) | 1988-02-10 | 1991-02-19 | Electronics Research Group, Inc. | Low-noise switching power supply having variable reluctance transformer |
US5001620A (en) | 1988-07-25 | 1991-03-19 | Astec International Limited | Power factor improvement |
US5055746A (en) | 1990-08-13 | 1991-10-08 | Electronic Ballast Technology, Incorporated | Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases |
US5109185A (en) | 1989-09-29 | 1992-04-28 | Ball Newton E | Phase-controlled reversible power converter presenting a controllable counter emf to a source of an impressed voltage |
US5121079A (en) | 1991-02-12 | 1992-06-09 | Dargatz Marvin R | Driven-common electronic amplifier |
US5206540A (en) | 1991-05-09 | 1993-04-27 | Unitrode Corporation | Transformer isolated drive circuit |
US5264780A (en) | 1992-08-10 | 1993-11-23 | International Business Machines Corporation | On time control and gain circuit |
US5278490A (en) | 1990-09-04 | 1994-01-11 | California Institute Of Technology | One-cycle controlled switching circuit |
EP0585789A1 (en) | 1992-09-01 | 1994-03-09 | Power Integrations, Inc. | Three-terminal switched mode power supply integrated circuit |
US5323157A (en) | 1993-01-15 | 1994-06-21 | Motorola, Inc. | Sigma-delta digital-to-analog converter with reduced noise |
US5359180A (en) | 1992-10-02 | 1994-10-25 | General Electric Company | Power supply system for arcjet thrusters |
EP0632679A1 (en) | 1993-06-22 | 1995-01-04 | Siemens Aktiengesellschaft | Method and circuit for control of room lighting |
US5383109A (en) | 1993-12-10 | 1995-01-17 | University Of Colorado | High power factor boost rectifier apparatus |
US5424932A (en) | 1993-01-05 | 1995-06-13 | Yokogawa Electric Corporation | Multi-output switching power supply having an improved secondary output circuit |
US5477481A (en) | 1991-02-15 | 1995-12-19 | Crystal Semiconductor Corporation | Switched-capacitor integrator with chopper stabilization performed at the sampling rate |
US5479333A (en) | 1994-04-25 | 1995-12-26 | Chrysler Corporation | Power supply start up booster circuit |
US5481178A (en) | 1993-03-23 | 1996-01-02 | Linear Technology Corporation | Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit |
US5565761A (en) | 1994-09-02 | 1996-10-15 | Micro Linear Corp | Synchronous switching cascade connected offline PFC-PWM combination power converter controller |
US5589759A (en) | 1992-07-30 | 1996-12-31 | Sgs-Thomson Microelectronics S.R.L. | Circuit for detecting voltage variations in relation to a set value, for devices comprising error amplifiers |
US5638265A (en) | 1993-08-24 | 1997-06-10 | Gabor; George | Low line harmonic AC to DC power supply |
US5691890A (en) | 1995-12-01 | 1997-11-25 | International Business Machines Corporation | Power supply with power factor correction circuit |
US5747977A (en) | 1995-03-30 | 1998-05-05 | Micro Linear Corporation | Switching regulator having low power mode responsive to load power consumption |
US5757635A (en) | 1995-12-28 | 1998-05-26 | Samsung Electronics Co., Ltd. | Power factor correction circuit and circuit therefor having sense-FET and boost converter control circuit |
US5764039A (en) | 1995-11-15 | 1998-06-09 | Samsung Electronics Co., Ltd. | Power factor correction circuit having indirect input voltage sensing |
US5768111A (en) | 1995-02-27 | 1998-06-16 | Nec Corporation | Converter comprising a piezoelectric transformer and a switching stage of a resonant frequency different from that of the transformer |
US5781040A (en) | 1996-10-31 | 1998-07-14 | Hewlett-Packard Company | Transformer isolated driver for power transistor using frequency switching as the control signal |
US5783909A (en) | 1997-01-10 | 1998-07-21 | Relume Corporation | Maintaining LED luminous intensity |
US5798635A (en) | 1996-06-20 | 1998-08-25 | Micro Linear Corporation | One pin error amplifier and switched soft-start for an eight pin PFC-PWM combination integrated circuit converter controller |
DE19713814A1 (en) | 1997-04-03 | 1998-10-15 | Siemens Ag | Switching power supply |
EP0910168A1 (en) | 1997-10-16 | 1999-04-21 | Hewlett-Packard Company | Delta-sigma pulse width modulator |
US5900683A (en) | 1997-12-23 | 1999-05-04 | Ford Global Technologies, Inc. | Isolated gate driver for power switching device and method for carrying out same |
US5912812A (en) | 1996-12-19 | 1999-06-15 | Lucent Technologies Inc. | Boost power converter for powering a load from an AC source |
US5929400A (en) | 1997-12-22 | 1999-07-27 | Otis Elevator Company | Self commissioning controller for field-oriented elevator motor/drive system |
US5946202A (en) | 1997-01-24 | 1999-08-31 | Baker Hughes Incorporated | Boost mode power conversion |
US5946206A (en) | 1997-02-17 | 1999-08-31 | Tdk Corporation | Plural parallel resonant switching power supplies |
US5952849A (en) | 1997-02-21 | 1999-09-14 | Analog Devices, Inc. | Logic isolator with high transient immunity |
US5960207A (en) | 1997-01-21 | 1999-09-28 | Dell Usa, L.P. | System and method for reducing power losses by gating an active power factor conversion process |
US5962989A (en) | 1995-01-17 | 1999-10-05 | Negawatt Technologies Inc. | Energy management control system |
US5963086A (en) | 1997-08-08 | 1999-10-05 | Velodyne Acoustics, Inc. | Class D amplifier with switching control |
US5966297A (en) | 1997-08-28 | 1999-10-12 | Iwatsu Electric Co., Ltd. | Large bandwidth analog isolation circuit |
EP0838791A3 (en) | 1996-10-25 | 1999-11-17 | Hubbell Incorporated | Multifunction sensor and network sensor system |
US6016038A (en) | 1997-08-26 | 2000-01-18 | Color Kinetics, Inc. | Multicolored LED lighting method and apparatus |
US6043633A (en) | 1998-06-05 | 2000-03-28 | Systel Development & Industries | Power factor correction method and apparatus |
US6072969A (en) | 1996-03-05 | 2000-06-06 | Canon Kabushiki Kaisha | Developing cartridge |
US6083276A (en) | 1998-06-11 | 2000-07-04 | Corel, Inc. | Creating and configuring component-based applications using a text-based descriptive attribute grammar |
US6084450A (en) | 1997-01-14 | 2000-07-04 | The Regents Of The University Of California | PWM controller with one cycle response |
US6091233A (en) | 1999-01-14 | 2000-07-18 | Micro Linear Corporation | Interleaved zero current switching in a power factor correction boost converter |
US6125046A (en) | 1998-11-10 | 2000-09-26 | Fairfield Korea Semiconductor Ltd. | Switching power supply having a high efficiency starting circuit |
US6181114B1 (en) | 1999-10-26 | 2001-01-30 | International Business Machines Corporation | Boost circuit which includes an additional winding for providing an auxiliary output voltage |
US6188427B1 (en) * | 1997-04-23 | 2001-02-13 | Texas Instruments Incorporated | Illumination system having an intensity calibration system |
WO2001015316A1 (en) | 1999-08-23 | 2001-03-01 | Intel Corporation | Method and apparatus for matching common mode output voltage at a switched-capacitor to continuous-time interface |
US6211627B1 (en) | 1997-07-29 | 2001-04-03 | Michael Callahan | Lighting systems |
US6211626B1 (en) | 1997-08-26 | 2001-04-03 | Color Kinetics, Incorporated | Illumination components |
US6229271B1 (en) | 2000-02-24 | 2001-05-08 | Osram Sylvania Inc. | Low distortion line dimmer and dimming ballast |
US6229292B1 (en) | 1999-02-12 | 2001-05-08 | Analog Devices, Inc. | Voltage regulator compensation circuit and method |
US6246183B1 (en) | 2000-02-28 | 2001-06-12 | Litton Systems, Inc. | Dimmable electrodeless light source |
US6259614B1 (en) | 1999-07-12 | 2001-07-10 | International Rectifier Corporation | Power factor correction control circuit |
US6304473B1 (en) | 2000-06-02 | 2001-10-16 | Iwatt | Operating a power converter at optimal efficiency |
US6343026B1 (en) | 2000-11-09 | 2002-01-29 | Artesyn Technologies, Inc. | Current limit circuit for interleaved converters |
US6344811B1 (en) | 1999-03-16 | 2002-02-05 | Audio Logic, Inc. | Power supply compensation for noise shaped, digital amplifiers |
WO2002015386A2 (en) | 2000-08-14 | 2002-02-21 | K.S. Waves Ltd. | High-efficiency audio power amplifier |
US6369525B1 (en) | 2000-11-21 | 2002-04-09 | Philips Electronics North America | White light-emitting-diode lamp driver based on multiple output converter with output current mode control |
US6385063B1 (en) | 1998-06-23 | 2002-05-07 | Siemens Aktiengesellschaft | Hybrid filter for an alternating current network |
US20020065583A1 (en) | 2000-11-30 | 2002-05-30 | Matsushita Electric Works, Ltd. | Setting apparatus and setting method each for setting setting information in electric power line carrier communication terminal apparatus |
EP1213823A2 (en) | 2000-12-04 | 2002-06-12 | Sanken Electric Co., Ltd. | DC-to-DC converter |
US6407691B1 (en) | 2000-10-18 | 2002-06-18 | Cirrus Logic, Inc. | Providing power, clock, and control signals as a single combined signal across an isolation barrier in an ADC |
US6407514B1 (en) | 2001-03-29 | 2002-06-18 | General Electric Company | Non-synchronous control of self-oscillating resonant converters |
US6407515B1 (en) | 1999-11-12 | 2002-06-18 | Lighting Control, Inc. | Power regulator employing a sinusoidal reference |
US6445600B2 (en) | 1998-07-13 | 2002-09-03 | Ben-Gurion University Of The Negev Research & Development Authority | Modular structure of an apparatus for regulating the harmonics of current drawn from power lines by an electronic load |
US6452521B1 (en) | 2001-03-14 | 2002-09-17 | Rosemount Inc. | Mapping a delta-sigma converter range to a sensor range |
US20020145041A1 (en) | 2001-03-16 | 2002-10-10 | Koninklijke Philips Electronics N.V. | RGB LED based light driver using microprocessor controlled AC distributed power system |
US20020150151A1 (en) | 1997-04-22 | 2002-10-17 | Silicon Laboratories Inc. | Digital isolation system with hybrid circuit in ADC calibration loop |
US6469484B2 (en) | 2000-12-13 | 2002-10-22 | Semiconductor Components Industries Llc | Power supply circuit and method thereof to detect demagnitization of the power supply |
US20020166073A1 (en) | 2001-05-02 | 2002-11-07 | Nguyen James Hung | Apparatus and method for adaptively controlling power supplied to a hot-pluggable subsystem |
WO2002091805A2 (en) | 2001-05-10 | 2002-11-14 | Color Kinetics Incorporated | Systems and methods for synchronizing lighting effects |
US6509913B2 (en) | 1998-04-30 | 2003-01-21 | Openwave Systems Inc. | Configurable man-machine interface |
US6531854B2 (en) | 2001-03-30 | 2003-03-11 | Champion Microelectronic Corp. | Power factor correction circuit arrangement |
US20030095013A1 (en) | 2000-05-10 | 2003-05-22 | Melanson John L. | Modulation of a digital input signal using a digital signal modulator and signal splitting |
US6583550B2 (en) | 2000-10-24 | 2003-06-24 | Toyoda Gosei Co., Ltd. | Fluorescent tube with light emitting diodes |
US20030174520A1 (en) | 2000-10-24 | 2003-09-18 | Igor Bimbaud | Self-oscillating control circuit voltage converter |
US6628106B1 (en) | 2001-07-30 | 2003-09-30 | University Of Central Florida | Control method and circuit to provide voltage and current regulation for multiphase DC/DC converters |
US6636003B2 (en) | 2000-09-06 | 2003-10-21 | Spectrum Kinetics | Apparatus and method for adjusting the color temperature of white semiconduct or light emitters |
US6646848B2 (en) | 2001-01-31 | 2003-11-11 | Matsushita Electric Industrial Co., Ltd. | Switching power supply apparatus |
US6657417B1 (en) | 2002-05-31 | 2003-12-02 | Champion Microelectronic Corp. | Power factor correction with carrier control and input voltage sensing |
US20030223255A1 (en) | 2002-05-31 | 2003-12-04 | Green Power Technologies Ltd. | Method and apparatus for active power factor correction with minimum input current distortion |
US20040004465A1 (en) | 2002-07-08 | 2004-01-08 | Cogency Semiconductor Inc. | Dual-output direct current voltage converter |
US6688753B2 (en) | 2001-02-02 | 2004-02-10 | Koninklijke Philips Electronics N.V. | Integrated light source |
EP1164819B1 (en) | 2000-06-15 | 2004-02-11 | City University of Hong Kong | Dimmable electronic ballast |
US20040046683A1 (en) | 2001-03-08 | 2004-03-11 | Shindengen Electric Manufacturing Co., Ltd. | DC stabilized power supply |
US6713974B2 (en) | 2002-01-10 | 2004-03-30 | Lightech Electronic Industries Ltd. | Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise |
US6724174B1 (en) | 2002-09-12 | 2004-04-20 | Linear Technology Corp. | Adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators |
US6727832B1 (en) | 2002-11-27 | 2004-04-27 | Cirrus Logic, Inc. | Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same |
US20040085117A1 (en) | 2000-12-06 | 2004-05-06 | Joachim Melbert | Method and device for switching on and off power semiconductors, especially for the torque-variable operation of an asynchronous machine, for operating an ignition system for spark ignition engines, and switched-mode power supply |
US20040085030A1 (en) | 2002-10-30 | 2004-05-06 | Benoit Laflamme | Multicolor lamp system |
US6737845B2 (en) | 2001-06-21 | 2004-05-18 | Champion Microelectronic Corp. | Current inrush limiting and bleed resistor current inhibiting in a switching power converter |
US6741123B1 (en) | 2002-12-26 | 2004-05-25 | Cirrus Logic, Inc. | Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same |
US6768655B1 (en) | 2003-02-03 | 2004-07-27 | System General Corp. | Discontinuous mode PFC controller having a power saving modulator and operation method thereof |
US6781351B2 (en) | 2002-08-17 | 2004-08-24 | Supertex Inc. | AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics |
US20040169477A1 (en) | 2003-02-28 | 2004-09-02 | Naoki Yanai | Dimming-control lighting apparatus for incandescent electric lamp |
US6788011B2 (en) | 1997-08-26 | 2004-09-07 | Color Kinetics, Incorporated | Multicolored LED lighting method and apparatus |
US20040227571A1 (en) | 2003-05-12 | 2004-11-18 | Yasuji Kuribayashi | Power amplifier circuit |
US20040228116A1 (en) | 2003-05-13 | 2004-11-18 | Carroll Miller | Electroluminescent illumination for a magnetic compass |
US20040232971A1 (en) | 2003-03-06 | 2004-11-25 | Denso Corporation | Electrically insulated switching element drive circuit |
US20040239262A1 (en) | 2002-05-28 | 2004-12-02 | Shigeru Ido | Electronic ballast for a discharge lamp |
US6839247B1 (en) | 2003-07-10 | 2005-01-04 | System General Corp. | PFC-PWM controller having a power saving means |
US6860628B2 (en) | 2002-07-17 | 2005-03-01 | Jonas J. Robertson | LED replacement for fluorescent lighting |
US20050057237A1 (en) | 2002-01-11 | 2005-03-17 | Robert Clavel | Power factor controller |
US6870325B2 (en) | 2002-02-22 | 2005-03-22 | Oxley Developments Company Limited | Led drive circuit and method |
US6873065B2 (en) | 1997-10-23 | 2005-03-29 | Analog Devices, Inc. | Non-optical signal isolator |
US6882552B2 (en) | 2000-06-02 | 2005-04-19 | Iwatt, Inc. | Power converter driven by power pulse and sense pulse |
US6888322B2 (en) | 1997-08-26 | 2005-05-03 | Color Kinetics Incorporated | Systems and methods for color changing device and enclosure |
EP1528785A1 (en) | 2003-10-14 | 2005-05-04 | Archimede Elettronica S.r.l. | Device and method for controlling the color of a light source |
US6894471B2 (en) | 2002-05-31 | 2005-05-17 | St Microelectronics S.R.L. | Method of regulating the supply voltage of a load and related voltage regulator |
US20050156770A1 (en) | 2004-01-16 | 2005-07-21 | Melanson John L. | Jointly nonlinear delta sigma modulators |
US20050168492A1 (en) | 2002-05-28 | 2005-08-04 | Koninklijke Philips Electronics N.V. | Motion blur decrease in varying duty cycle |
US6933706B2 (en) | 2003-09-15 | 2005-08-23 | Semiconductor Components Industries, Llc | Method and circuit for optimizing power efficiency in a DC-DC converter |
US20050184895A1 (en) | 2004-02-25 | 2005-08-25 | Nellcor Puritan Bennett Inc. | Multi-bit ADC with sigma-delta modulation |
US6940733B2 (en) | 2002-08-22 | 2005-09-06 | Supertex, Inc. | Optimal control of wide conversion ratio switching converters |
US20050197952A1 (en) | 2003-08-15 | 2005-09-08 | Providus Software Solutions, Inc. | Risk mitigation management |
US6944034B1 (en) | 2003-06-30 | 2005-09-13 | Iwatt Inc. | System and method for input current shaping in a power converter |
US20050218838A1 (en) | 2004-03-15 | 2005-10-06 | Color Kinetics Incorporated | LED-based lighting network power control methods and apparatus |
US20050222881A1 (en) | 2004-04-05 | 2005-10-06 | Garry Booker | Management work system and method |
US6956750B1 (en) | 2003-05-16 | 2005-10-18 | Iwatt Inc. | Power converter controller having event generator for detection of events and generation of digital error |
US6958920B2 (en) | 2003-10-02 | 2005-10-25 | Supertex, Inc. | Switching power converter and method of controlling output voltage thereof using predictive sensing of magnetic flux |
US20050253533A1 (en) | 2002-05-09 | 2005-11-17 | Color Kinetics Incorporated | Dimmable LED-based MR16 lighting apparatus methods |
US6967448B2 (en) | 1997-08-26 | 2005-11-22 | Color Kinetics, Incorporated | Methods and apparatus for controlling illumination |
US6970503B1 (en) | 2000-04-21 | 2005-11-29 | National Semiconductor Corporation | Apparatus and method for converting analog signal to pulse-width-modulated signal |
US6975079B2 (en) | 1997-08-26 | 2005-12-13 | Color Kinetics Incorporated | Systems and methods for controlling illumination sources |
US6975523B2 (en) | 2002-10-16 | 2005-12-13 | Samsung Electronics Co., Ltd. | Power supply capable of protecting electric device circuit |
US20050275354A1 (en) | 2004-06-10 | 2005-12-15 | Hausman Donald F Jr | Apparatus and methods for regulating delivery of electrical energy |
US6980446B2 (en) | 2002-02-08 | 2005-12-27 | Sanken Electric Co., Ltd. | Circuit for starting power source apparatus |
US20060002110A1 (en) | 2004-03-15 | 2006-01-05 | Color Kinetics Incorporated | Methods and systems for providing lighting systems |
US20060022916A1 (en) | 2004-06-14 | 2006-02-02 | Natale Aiello | LED driving device with variable light intensity |
US20060023002A1 (en) | 2004-08-02 | 2006-02-02 | Oki Electric Industry Co., Ltd. | Color balancing circuit for a display panel |
EP1014563B1 (en) | 1998-12-14 | 2006-03-01 | Alcatel | Amplifier arrangement with voltage gain and reduced power consumption |
US7034611B2 (en) | 2004-02-09 | 2006-04-25 | Texas Instruments Inc. | Multistage common mode feedback for improved linearity line drivers |
US20060116898A1 (en) | 2003-11-18 | 2006-06-01 | Peterson Gary E | Interactive risk management system and method with reputation risk management |
US20060125420A1 (en) | 2004-12-06 | 2006-06-15 | Michael Boone | Candle emulation device |
US7064531B1 (en) | 2005-03-31 | 2006-06-20 | Micrel, Inc. | PWM buck regulator with LDO standby mode |
US7064498B2 (en) | 1997-08-26 | 2006-06-20 | Color Kinetics Incorporated | Light-emitting diode based products |
WO2006067521A1 (en) | 2004-12-20 | 2006-06-29 | Outside In (Cambridge) Limited | Lightning apparatus and method |
US7072191B2 (en) | 2002-04-26 | 2006-07-04 | Fdk Corporation | Switching power source circuit for independent per cycle control of ON/OFF time ratio |
US7075329B2 (en) | 2003-04-30 | 2006-07-11 | Analog Devices, Inc. | Signal isolators using micro-transformers |
US7078963B1 (en) | 2003-03-21 | 2006-07-18 | D2Audio Corporation | Integrated PULSHI mode with shutdown |
US7088059B2 (en) | 2004-07-21 | 2006-08-08 | Boca Flasher | Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems |
US20060184414A1 (en) | 2005-02-11 | 2006-08-17 | George Pappas | Business management tool |
US7099163B1 (en) | 2005-11-14 | 2006-08-29 | Bcd Semiconductor Manufacturing Limited | PWM controller with constant output power limit for a power supply |
US7102902B1 (en) | 2005-02-17 | 2006-09-05 | Ledtronics, Inc. | Dimmer circuit for LED |
US7106603B1 (en) | 2005-05-23 | 2006-09-12 | Li Shin International Enterprise Corporation | Switch-mode self-coupling auxiliary power device |
US7109791B1 (en) | 2004-07-09 | 2006-09-19 | Rf Micro Devices, Inc. | Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier |
US20060214603A1 (en) | 2005-03-22 | 2006-09-28 | In-Hwan Oh | Single-stage digital power converter for driving LEDs |
US20060226795A1 (en) | 2005-04-08 | 2006-10-12 | S.C. Johnson & Son, Inc. | Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices |
US7126288B2 (en) | 2003-05-05 | 2006-10-24 | International Rectifier Corporation | Digital electronic ballast control apparatus and method |
US20060238136A1 (en) | 2003-07-02 | 2006-10-26 | Johnson Iii H F | Lamp and bulb for illumination and ambiance lighting |
US20060261754A1 (en) | 2005-05-18 | 2006-11-23 | Samsung Electro-Mechanics Co., Ltd. | LED driving circuit having dimming circuit |
US7145295B1 (en) | 2005-07-24 | 2006-12-05 | Aimtron Technology Corp. | Dimming control circuit for light-emitting diodes |
WO2006135584A1 (en) | 2005-06-10 | 2006-12-21 | Rf Micro Devices, Inc. | Doherty amplifier configuration for a collector controlled power amplifier |
US20060285365A1 (en) | 2005-06-16 | 2006-12-21 | Active Semiconductors International Inc. | Primary side constant output current controller |
US7158633B1 (en) | 1999-11-16 | 2007-01-02 | Silicon Laboratories, Inc. | Method and apparatus for monitoring subscriber loop interface circuitry power dissipation |
US20070024213A1 (en) | 2005-07-28 | 2007-02-01 | Synditec, Inc. | Pulsed current averaging controller with amplitude modulation and time division multiplexing for arrays of independent pluralities of light emitting diodes |
US20070029946A1 (en) | 2005-08-03 | 2007-02-08 | Yu Chung-Che | APPARATUS OF LIGHT SOURCE AND ADJUSTABLE CONTROL CIRCUIT FOR LEDs |
US7180250B1 (en) | 2005-01-25 | 2007-02-20 | Henry Michael Gannon | Triac-based, low voltage AC dimmer |
US20070040512A1 (en) | 2005-08-17 | 2007-02-22 | Tir Systems Ltd. | Digitally controlled luminaire system |
US7183957B1 (en) | 2005-12-30 | 2007-02-27 | Cirrus Logic, Inc. | Signal processing system with analog-to-digital converter using delta-sigma modulation having an internal stabilizer loop |
EP1460775B8 (en) | 2003-03-18 | 2007-02-28 | POWER ONE ITALY S.p.A. | Lighting control with power line modem |
US20070055564A1 (en) | 2003-06-20 | 2007-03-08 | Fourman Clive M | System for facilitating management and organisational development processes |
US20070053182A1 (en) | 2005-09-07 | 2007-03-08 | Jonas Robertson | Combination fluorescent and LED lighting system |
US20070103949A1 (en) | 2004-08-27 | 2007-05-10 | Sanken Electric Co., Ltd. | Power factor improving circuit |
US7221130B2 (en) | 2005-01-05 | 2007-05-22 | Fyrestorm, Inc. | Switching power converter employing pulse frequency modulation control |
US20070124615A1 (en) | 2005-11-29 | 2007-05-31 | Potentia Semiconductor Corporation | Standby arrangement for power supplies |
US20070126656A1 (en) | 2005-12-07 | 2007-06-07 | Industrial Technology Research Institute | Illumination brightness and color control system and method therefor |
WO2007026170A3 (en) | 2005-09-03 | 2007-06-14 | Light Ltd E | Improvements to lighting systems |
US7233135B2 (en) | 2003-09-29 | 2007-06-19 | Murata Manufacturing Co., Ltd. | Ripple converter |
US7246919B2 (en) | 2004-03-03 | 2007-07-24 | S.C. Johnson & Son, Inc. | LED light bulb with active ingredient emission |
US20070182699A1 (en) | 2006-02-09 | 2007-08-09 | Samsung Electro-Mechanics Co., Ltd. | Field sequential color mode liquid crystal display |
US7255457B2 (en) | 1999-11-18 | 2007-08-14 | Color Kinetics Incorporated | Methods and apparatus for generating and modulating illumination conditions |
US7266001B1 (en) | 2004-03-19 | 2007-09-04 | Marvell International Ltd. | Method and apparatus for controlling power factor correction |
US7276861B1 (en) | 2004-09-21 | 2007-10-02 | Exclara, Inc. | System and method for driving LED |
US7288902B1 (en) | 2007-03-12 | 2007-10-30 | Cirrus Logic, Inc. | Color variations in a dimmable lighting device with stable color temperature light sources |
US7292013B1 (en) | 2004-09-24 | 2007-11-06 | Marvell International Ltd. | Circuits, systems, methods, and software for power factor correction and/or control |
US7310244B2 (en) | 2006-01-25 | 2007-12-18 | System General Corp. | Primary side controlled switching regulator |
US20080027841A1 (en) | 2002-01-16 | 2008-01-31 | Jeff Scott Eder | System for integrating enterprise performance management |
US20080043504A1 (en) | 2006-08-16 | 2008-02-21 | On-Bright Electronics (Shanghai) Co., Ltd. | System and method for providing control for switch-mode power supply |
US20080054815A1 (en) | 2006-09-01 | 2008-03-06 | Broadcom Corporation | Single inductor serial-parallel LED driver |
US7345458B2 (en) | 2003-07-07 | 2008-03-18 | Nippon Telegraph And Telephone Corporation | Booster that utilizes energy output from a power supply unit |
US20080116818A1 (en) | 2006-11-21 | 2008-05-22 | Exclara Inc. | Time division modulation with average current regulation for independent control of arrays of light emitting diodes |
US20080130336A1 (en) | 2005-07-01 | 2008-06-05 | Yasutaka Taguchi | Power Supply Device |
US20080130322A1 (en) | 2006-12-01 | 2008-06-05 | Artusi Daniel A | Power system with power converters having an adaptive controller |
WO2008072160A1 (en) | 2006-12-13 | 2008-06-19 | Koninklijke Philips Electronics N.V. | Method for light emitting diode control and corresponding light sensor array, backlight and liquid crystal display |
US20080150433A1 (en) | 2006-12-26 | 2008-06-26 | Kabushiki Kaisha Toshiba | Backlight control unit and backlight control method |
US20080154679A1 (en) | 2006-11-03 | 2008-06-26 | Wade Claude E | Method and apparatus for a processing risk assessment and operational oversight framework |
US7394210B2 (en) | 2004-09-29 | 2008-07-01 | Tir Technology Lp | System and method for controlling luminaires |
US20080174372A1 (en) | 2007-01-19 | 2008-07-24 | Tucker John C | Multi-stage amplifier with multiple sets of fixed and variable voltage rails |
US20080174291A1 (en) | 2002-04-29 | 2008-07-24 | Emerson Energy Systems Ab | Power Supply System and Apparatus |
US20080175029A1 (en) | 2007-01-18 | 2008-07-24 | Sang-Hwa Jung | Burst mode operation in a DC-DC converter |
US20080192509A1 (en) | 2007-02-13 | 2008-08-14 | Dhuyvetter Timothy A | Dc-dc converter with isolation |
US20080232141A1 (en) | 2006-12-01 | 2008-09-25 | Artusi Daniel A | Power System with Power Converters Having an Adaptive Controller |
US20080239764A1 (en) | 2007-03-30 | 2008-10-02 | Cambridge Semiconductor Limited | Forward power converter controllers |
US20080259655A1 (en) | 2007-04-19 | 2008-10-23 | Da-Chun Wei | Switching-mode power converter and pulse-width-modulation control circuit with primary-side feedback control |
US20080278132A1 (en) | 2007-05-07 | 2008-11-13 | Kesterson John W | Digital Compensation For Cable Drop In A Primary Side Control Power Supply Controller |
US7459660B2 (en) * | 2004-10-05 | 2008-12-02 | Mediatek Incorporation | System and method for calibrating light emitting device |
WO2008152838A1 (en) | 2007-06-14 | 2008-12-18 | Sanken Electric Co., Ltd. | Ac-dc converter |
US20090070188A1 (en) | 2007-09-07 | 2009-03-12 | Certus Limited (Uk) | Portfolio and project risk assessment |
US7511437B2 (en) | 2006-02-10 | 2009-03-31 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for high power factor controlled power delivery using a single switching stage per load |
US7545130B2 (en) | 2005-11-11 | 2009-06-09 | L&L Engineering, Llc | Non-linear controller for switching power supply |
US20090147544A1 (en) | 2007-12-11 | 2009-06-11 | Melanson John L | Modulated transformer-coupled gate control signaling method and apparatus |
US20090174479A1 (en) | 2008-01-04 | 2009-07-09 | Texas Instruments Incorporated | High-voltage differential amplifier and method using low voltage amplifier and dynamic voltage selection |
US7583136B2 (en) | 2000-03-28 | 2009-09-01 | International Rectifier Corporation | Active filter for reduction of common mode current |
US7719246B2 (en) | 2007-05-02 | 2010-05-18 | Cirrus Logic, Inc. | Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling |
US20100141317A1 (en) | 2006-10-11 | 2010-06-10 | Mitsubishi Electric Corporation | Spread-period clock generator |
US7746671B2 (en) | 2005-05-23 | 2010-06-29 | Infineon Technologies Ag | Control circuit for a switch unit of a clocked power supply circuit, and resonance converter |
US7750738B2 (en) | 2008-11-20 | 2010-07-06 | Infineon Technologies Ag | Process, voltage and temperature control for high-speed, low-power fixed and variable gain amplifiers based on MOSFET resistors |
EP2204905A1 (en) | 2008-12-31 | 2010-07-07 | Cirrus Logic, Inc. | Electronic system having common mode voltage range enhancement |
US7756896B1 (en) | 2002-03-11 | 2010-07-13 | Jp Morgan Chase Bank | System and method for multi-dimensional risk analysis |
US7777563B2 (en) | 2008-12-18 | 2010-08-17 | Freescale Semiconductor, Inc. | Spread spectrum pulse width modulation method and apparatus |
US7804480B2 (en) | 2005-12-27 | 2010-09-28 | Lg Display Co., Ltd. | Hybrid backlight driving apparatus for liquid crystal display |
US7804256B2 (en) | 2007-03-12 | 2010-09-28 | Cirrus Logic, Inc. | Power control system for current regulated light sources |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3528046A1 (en) * | 1985-08-05 | 1987-02-05 | Bbc Brown Boveri & Cie | RADIO CONTROL RECEIVER |
US5701058A (en) * | 1996-01-04 | 1997-12-23 | Honeywell Inc. | Method of semiautomatic ambient light sensor calibration in an automatic control system |
-
2009
- 2009-04-30 US US12/433,222 patent/US8482223B2/en active Active
-
2010
- 2010-04-22 ES ES10716959T patent/ES2713063T3/en active Active
- 2010-04-22 CN CN201080003746.8A patent/CN102282913B/en active Active
- 2010-04-22 WO PCT/US2010/031978 patent/WO2010126765A2/en active Application Filing
- 2010-04-22 EP EP10716959.1A patent/EP2425682B1/en active Active
Patent Citations (262)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3316495A (en) | 1964-07-06 | 1967-04-25 | Cons Systems Corp | Low-level commutator with means for providing common mode rejection |
US3423689A (en) | 1965-08-19 | 1969-01-21 | Hewlett Packard Co | Direct current amplifier |
US3586988A (en) | 1967-12-01 | 1971-06-22 | Newport Lab | Direct coupled differential amplifier |
US3725804A (en) | 1971-11-26 | 1973-04-03 | Avco Corp | Capacitance compensation circuit for differential amplifier |
US3790878A (en) | 1971-12-22 | 1974-02-05 | Keithley Instruments | Switching regulator having improved control circuiting |
US3881167A (en) | 1973-07-05 | 1975-04-29 | Pelton Company Inc | Method and apparatus to maintain constant phase between reference and output signals |
US4075701A (en) | 1975-02-12 | 1978-02-21 | Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung | Method and circuit arrangement for adapting the measuring range of a measuring device operating with delta modulation in a navigation system |
US4334250A (en) | 1978-03-16 | 1982-06-08 | Tektronix, Inc. | MFM data encoder with write precompensation |
GB2069269A (en) | 1980-02-11 | 1981-08-19 | Tektronix Inc | Supply voltage driver |
US4409476A (en) | 1980-06-16 | 1983-10-11 | Asea Aktiebolag | Fiber optic temperature-measuring apparatus |
US4414493A (en) | 1981-10-06 | 1983-11-08 | Thomas Industries Inc. | Light dimmer for solid state ballast |
US4476706A (en) | 1982-01-18 | 1984-10-16 | Delphian Partners | Remote calibration system |
US4523128A (en) | 1982-12-10 | 1985-06-11 | Honeywell Inc. | Remote control of dimmable electronic gas discharge lamp ballasts |
US4700188A (en) | 1985-01-29 | 1987-10-13 | Micronic Interface Technologies | Electric power measurement system and hall effect based electric power meter for use therein |
US4677366A (en) | 1986-05-12 | 1987-06-30 | Pioneer Research, Inc. | Unity power factor power supply |
US4683529A (en) | 1986-11-12 | 1987-07-28 | Zytec Corporation | Switching power supply with automatic power factor correction |
US4797633A (en) | 1987-03-20 | 1989-01-10 | Video Sound, Inc. | Audio amplifier |
US4994952A (en) | 1988-02-10 | 1991-02-19 | Electronics Research Group, Inc. | Low-noise switching power supply having variable reluctance transformer |
US5001620A (en) | 1988-07-25 | 1991-03-19 | Astec International Limited | Power factor improvement |
US4979087A (en) | 1988-09-09 | 1990-12-18 | Aviation Limited | Inductive coupler |
US4937728A (en) | 1989-03-07 | 1990-06-26 | Rca Licensing Corporation | Switch-mode power supply with burst mode standby operation |
US4973919A (en) | 1989-03-23 | 1990-11-27 | Doble Engineering Company | Amplifying with directly coupled, cascaded amplifiers |
US4940929A (en) | 1989-06-23 | 1990-07-10 | Apollo Computer, Inc. | AC to DC converter with unity power factor |
US4980898A (en) | 1989-08-08 | 1990-12-25 | Siemens-Pacesetter, Inc. | Self-oscillating burst mode transmitter with integral number of periods |
US5109185A (en) | 1989-09-29 | 1992-04-28 | Ball Newton E | Phase-controlled reversible power converter presenting a controllable counter emf to a source of an impressed voltage |
US4992919A (en) | 1989-12-29 | 1991-02-12 | Lee Chu Quon | Parallel resonant converter with zero voltage switching |
US5055746A (en) | 1990-08-13 | 1991-10-08 | Electronic Ballast Technology, Incorporated | Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases |
US5278490A (en) | 1990-09-04 | 1994-01-11 | California Institute Of Technology | One-cycle controlled switching circuit |
US5121079A (en) | 1991-02-12 | 1992-06-09 | Dargatz Marvin R | Driven-common electronic amplifier |
US5477481A (en) | 1991-02-15 | 1995-12-19 | Crystal Semiconductor Corporation | Switched-capacitor integrator with chopper stabilization performed at the sampling rate |
US5206540A (en) | 1991-05-09 | 1993-04-27 | Unitrode Corporation | Transformer isolated drive circuit |
US5589759A (en) | 1992-07-30 | 1996-12-31 | Sgs-Thomson Microelectronics S.R.L. | Circuit for detecting voltage variations in relation to a set value, for devices comprising error amplifiers |
US5264780A (en) | 1992-08-10 | 1993-11-23 | International Business Machines Corporation | On time control and gain circuit |
EP0585789A1 (en) | 1992-09-01 | 1994-03-09 | Power Integrations, Inc. | Three-terminal switched mode power supply integrated circuit |
US5359180A (en) | 1992-10-02 | 1994-10-25 | General Electric Company | Power supply system for arcjet thrusters |
US5424932A (en) | 1993-01-05 | 1995-06-13 | Yokogawa Electric Corporation | Multi-output switching power supply having an improved secondary output circuit |
US5323157A (en) | 1993-01-15 | 1994-06-21 | Motorola, Inc. | Sigma-delta digital-to-analog converter with reduced noise |
US6304066B1 (en) | 1993-03-23 | 2001-10-16 | Linear Technology Corporation | Control circuit and method for maintaining high efficiency over broad current ranges in a switching regular circuit |
US5481178A (en) | 1993-03-23 | 1996-01-02 | Linear Technology Corporation | Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit |
US5994885A (en) | 1993-03-23 | 1999-11-30 | Linear Technology Corporation | Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit |
US6580258B2 (en) | 1993-03-23 | 2003-06-17 | Linear Technology Corporation | Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit |
EP0632679A1 (en) | 1993-06-22 | 1995-01-04 | Siemens Aktiengesellschaft | Method and circuit for control of room lighting |
US5638265A (en) | 1993-08-24 | 1997-06-10 | Gabor; George | Low line harmonic AC to DC power supply |
US5383109A (en) | 1993-12-10 | 1995-01-17 | University Of Colorado | High power factor boost rectifier apparatus |
US5479333A (en) | 1994-04-25 | 1995-12-26 | Chrysler Corporation | Power supply start up booster circuit |
US5565761A (en) | 1994-09-02 | 1996-10-15 | Micro Linear Corp | Synchronous switching cascade connected offline PFC-PWM combination power converter controller |
US5962989A (en) | 1995-01-17 | 1999-10-05 | Negawatt Technologies Inc. | Energy management control system |
US5768111A (en) | 1995-02-27 | 1998-06-16 | Nec Corporation | Converter comprising a piezoelectric transformer and a switching stage of a resonant frequency different from that of the transformer |
US5747977A (en) | 1995-03-30 | 1998-05-05 | Micro Linear Corporation | Switching regulator having low power mode responsive to load power consumption |
US5764039A (en) | 1995-11-15 | 1998-06-09 | Samsung Electronics Co., Ltd. | Power factor correction circuit having indirect input voltage sensing |
US5691890A (en) | 1995-12-01 | 1997-11-25 | International Business Machines Corporation | Power supply with power factor correction circuit |
US5757635A (en) | 1995-12-28 | 1998-05-26 | Samsung Electronics Co., Ltd. | Power factor correction circuit and circuit therefor having sense-FET and boost converter control circuit |
US6072969A (en) | 1996-03-05 | 2000-06-06 | Canon Kabushiki Kaisha | Developing cartridge |
US5798635A (en) | 1996-06-20 | 1998-08-25 | Micro Linear Corporation | One pin error amplifier and switched soft-start for an eight pin PFC-PWM combination integrated circuit converter controller |
EP0838791A3 (en) | 1996-10-25 | 1999-11-17 | Hubbell Incorporated | Multifunction sensor and network sensor system |
US5781040A (en) | 1996-10-31 | 1998-07-14 | Hewlett-Packard Company | Transformer isolated driver for power transistor using frequency switching as the control signal |
US5912812A (en) | 1996-12-19 | 1999-06-15 | Lucent Technologies Inc. | Boost power converter for powering a load from an AC source |
US5783909A (en) | 1997-01-10 | 1998-07-21 | Relume Corporation | Maintaining LED luminous intensity |
US6084450A (en) | 1997-01-14 | 2000-07-04 | The Regents Of The University Of California | PWM controller with one cycle response |
US5960207A (en) | 1997-01-21 | 1999-09-28 | Dell Usa, L.P. | System and method for reducing power losses by gating an active power factor conversion process |
US5946202A (en) | 1997-01-24 | 1999-08-31 | Baker Hughes Incorporated | Boost mode power conversion |
US5946206A (en) | 1997-02-17 | 1999-08-31 | Tdk Corporation | Plural parallel resonant switching power supplies |
US5952849A (en) | 1997-02-21 | 1999-09-14 | Analog Devices, Inc. | Logic isolator with high transient immunity |
DE19713814A1 (en) | 1997-04-03 | 1998-10-15 | Siemens Ag | Switching power supply |
US7003023B2 (en) | 1997-04-22 | 2006-02-21 | Silicon Laboratories Inc. | Digital isolation system with ADC offset calibration |
US20020150151A1 (en) | 1997-04-22 | 2002-10-17 | Silicon Laboratories Inc. | Digital isolation system with hybrid circuit in ADC calibration loop |
US7050509B2 (en) | 1997-04-22 | 2006-05-23 | Silicon Laboratories Inc. | Digital isolation system with hybrid circuit in ADC calibration loop |
US6188427B1 (en) * | 1997-04-23 | 2001-02-13 | Texas Instruments Incorporated | Illumination system having an intensity calibration system |
US6211627B1 (en) | 1997-07-29 | 2001-04-03 | Michael Callahan | Lighting systems |
US5963086A (en) | 1997-08-08 | 1999-10-05 | Velodyne Acoustics, Inc. | Class D amplifier with switching control |
US6967448B2 (en) | 1997-08-26 | 2005-11-22 | Color Kinetics, Incorporated | Methods and apparatus for controlling illumination |
US6975079B2 (en) | 1997-08-26 | 2005-12-13 | Color Kinetics Incorporated | Systems and methods for controlling illumination sources |
US6888322B2 (en) | 1997-08-26 | 2005-05-03 | Color Kinetics Incorporated | Systems and methods for color changing device and enclosure |
US6788011B2 (en) | 1997-08-26 | 2004-09-07 | Color Kinetics, Incorporated | Multicolored LED lighting method and apparatus |
US6150774A (en) | 1997-08-26 | 2000-11-21 | Color Kinetics, Incorporated | Multicolored LED lighting method and apparatus |
US6806659B1 (en) | 1997-08-26 | 2004-10-19 | Color Kinetics, Incorporated | Multicolored LED lighting method and apparatus |
US6016038A (en) | 1997-08-26 | 2000-01-18 | Color Kinetics, Inc. | Multicolored LED lighting method and apparatus |
US7135824B2 (en) | 1997-08-26 | 2006-11-14 | Color Kinetics Incorporated | Systems and methods for controlling illumination sources |
US7064498B2 (en) | 1997-08-26 | 2006-06-20 | Color Kinetics Incorporated | Light-emitting diode based products |
US6211626B1 (en) | 1997-08-26 | 2001-04-03 | Color Kinetics, Incorporated | Illumination components |
US5966297A (en) | 1997-08-28 | 1999-10-12 | Iwatsu Electric Co., Ltd. | Large bandwidth analog isolation circuit |
EP0910168A1 (en) | 1997-10-16 | 1999-04-21 | Hewlett-Packard Company | Delta-sigma pulse width modulator |
US6873065B2 (en) | 1997-10-23 | 2005-03-29 | Analog Devices, Inc. | Non-optical signal isolator |
US5929400A (en) | 1997-12-22 | 1999-07-27 | Otis Elevator Company | Self commissioning controller for field-oriented elevator motor/drive system |
US5900683A (en) | 1997-12-23 | 1999-05-04 | Ford Global Technologies, Inc. | Isolated gate driver for power switching device and method for carrying out same |
US6509913B2 (en) | 1998-04-30 | 2003-01-21 | Openwave Systems Inc. | Configurable man-machine interface |
US6043633A (en) | 1998-06-05 | 2000-03-28 | Systel Development & Industries | Power factor correction method and apparatus |
US6083276A (en) | 1998-06-11 | 2000-07-04 | Corel, Inc. | Creating and configuring component-based applications using a text-based descriptive attribute grammar |
US6385063B1 (en) | 1998-06-23 | 2002-05-07 | Siemens Aktiengesellschaft | Hybrid filter for an alternating current network |
US6445600B2 (en) | 1998-07-13 | 2002-09-03 | Ben-Gurion University Of The Negev Research & Development Authority | Modular structure of an apparatus for regulating the harmonics of current drawn from power lines by an electronic load |
US6125046A (en) | 1998-11-10 | 2000-09-26 | Fairfield Korea Semiconductor Ltd. | Switching power supply having a high efficiency starting circuit |
EP1014563B1 (en) | 1998-12-14 | 2006-03-01 | Alcatel | Amplifier arrangement with voltage gain and reduced power consumption |
US6091233A (en) | 1999-01-14 | 2000-07-18 | Micro Linear Corporation | Interleaved zero current switching in a power factor correction boost converter |
US6229292B1 (en) | 1999-02-12 | 2001-05-08 | Analog Devices, Inc. | Voltage regulator compensation circuit and method |
US6344811B1 (en) | 1999-03-16 | 2002-02-05 | Audio Logic, Inc. | Power supply compensation for noise shaped, digital amplifiers |
US6259614B1 (en) | 1999-07-12 | 2001-07-10 | International Rectifier Corporation | Power factor correction control circuit |
WO2001015316A1 (en) | 1999-08-23 | 2001-03-01 | Intel Corporation | Method and apparatus for matching common mode output voltage at a switched-capacitor to continuous-time interface |
US6181114B1 (en) | 1999-10-26 | 2001-01-30 | International Business Machines Corporation | Boost circuit which includes an additional winding for providing an auxiliary output voltage |
US6407515B1 (en) | 1999-11-12 | 2002-06-18 | Lighting Control, Inc. | Power regulator employing a sinusoidal reference |
US7158633B1 (en) | 1999-11-16 | 2007-01-02 | Silicon Laboratories, Inc. | Method and apparatus for monitoring subscriber loop interface circuitry power dissipation |
US7255457B2 (en) | 1999-11-18 | 2007-08-14 | Color Kinetics Incorporated | Methods and apparatus for generating and modulating illumination conditions |
US6229271B1 (en) | 2000-02-24 | 2001-05-08 | Osram Sylvania Inc. | Low distortion line dimmer and dimming ballast |
US6246183B1 (en) | 2000-02-28 | 2001-06-12 | Litton Systems, Inc. | Dimmable electrodeless light source |
US7583136B2 (en) | 2000-03-28 | 2009-09-01 | International Rectifier Corporation | Active filter for reduction of common mode current |
US6970503B1 (en) | 2000-04-21 | 2005-11-29 | National Semiconductor Corporation | Apparatus and method for converting analog signal to pulse-width-modulated signal |
US20030095013A1 (en) | 2000-05-10 | 2003-05-22 | Melanson John L. | Modulation of a digital input signal using a digital signal modulator and signal splitting |
US6882552B2 (en) | 2000-06-02 | 2005-04-19 | Iwatt, Inc. | Power converter driven by power pulse and sense pulse |
US6304473B1 (en) | 2000-06-02 | 2001-10-16 | Iwatt | Operating a power converter at optimal efficiency |
EP1164819B1 (en) | 2000-06-15 | 2004-02-11 | City University of Hong Kong | Dimmable electronic ballast |
WO2002015386A2 (en) | 2000-08-14 | 2002-02-21 | K.S. Waves Ltd. | High-efficiency audio power amplifier |
US6636003B2 (en) | 2000-09-06 | 2003-10-21 | Spectrum Kinetics | Apparatus and method for adjusting the color temperature of white semiconduct or light emitters |
US6407691B1 (en) | 2000-10-18 | 2002-06-18 | Cirrus Logic, Inc. | Providing power, clock, and control signals as a single combined signal across an isolation barrier in an ADC |
US6963496B2 (en) | 2000-10-24 | 2005-11-08 | Stmicroelectronics S.A. | Voltage converter with a self-oscillating control circuit |
US20030174520A1 (en) | 2000-10-24 | 2003-09-18 | Igor Bimbaud | Self-oscillating control circuit voltage converter |
US6583550B2 (en) | 2000-10-24 | 2003-06-24 | Toyoda Gosei Co., Ltd. | Fluorescent tube with light emitting diodes |
US6343026B1 (en) | 2000-11-09 | 2002-01-29 | Artesyn Technologies, Inc. | Current limit circuit for interleaved converters |
US6369525B1 (en) | 2000-11-21 | 2002-04-09 | Philips Electronics North America | White light-emitting-diode lamp driver based on multiple output converter with output current mode control |
US20020065583A1 (en) | 2000-11-30 | 2002-05-30 | Matsushita Electric Works, Ltd. | Setting apparatus and setting method each for setting setting information in electric power line carrier communication terminal apparatus |
EP1213823A2 (en) | 2000-12-04 | 2002-06-12 | Sanken Electric Co., Ltd. | DC-to-DC converter |
US20040085117A1 (en) | 2000-12-06 | 2004-05-06 | Joachim Melbert | Method and device for switching on and off power semiconductors, especially for the torque-variable operation of an asynchronous machine, for operating an ignition system for spark ignition engines, and switched-mode power supply |
US6469484B2 (en) | 2000-12-13 | 2002-10-22 | Semiconductor Components Industries Llc | Power supply circuit and method thereof to detect demagnitization of the power supply |
US6646848B2 (en) | 2001-01-31 | 2003-11-11 | Matsushita Electric Industrial Co., Ltd. | Switching power supply apparatus |
US6688753B2 (en) | 2001-02-02 | 2004-02-10 | Koninklijke Philips Electronics N.V. | Integrated light source |
US20040046683A1 (en) | 2001-03-08 | 2004-03-11 | Shindengen Electric Manufacturing Co., Ltd. | DC stabilized power supply |
US6452521B1 (en) | 2001-03-14 | 2002-09-17 | Rosemount Inc. | Mapping a delta-sigma converter range to a sensor range |
US20020145041A1 (en) | 2001-03-16 | 2002-10-10 | Koninklijke Philips Electronics N.V. | RGB LED based light driver using microprocessor controlled AC distributed power system |
US6407514B1 (en) | 2001-03-29 | 2002-06-18 | General Electric Company | Non-synchronous control of self-oscillating resonant converters |
US6531854B2 (en) | 2001-03-30 | 2003-03-11 | Champion Microelectronic Corp. | Power factor correction circuit arrangement |
US20020166073A1 (en) | 2001-05-02 | 2002-11-07 | Nguyen James Hung | Apparatus and method for adaptively controlling power supplied to a hot-pluggable subsystem |
WO2002091805A2 (en) | 2001-05-10 | 2002-11-14 | Color Kinetics Incorporated | Systems and methods for synchronizing lighting effects |
US6737845B2 (en) | 2001-06-21 | 2004-05-18 | Champion Microelectronic Corp. | Current inrush limiting and bleed resistor current inhibiting in a switching power converter |
US6628106B1 (en) | 2001-07-30 | 2003-09-30 | University Of Central Florida | Control method and circuit to provide voltage and current regulation for multiphase DC/DC converters |
US6713974B2 (en) | 2002-01-10 | 2004-03-30 | Lightech Electronic Industries Ltd. | Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise |
US20050057237A1 (en) | 2002-01-11 | 2005-03-17 | Robert Clavel | Power factor controller |
US20080027841A1 (en) | 2002-01-16 | 2008-01-31 | Jeff Scott Eder | System for integrating enterprise performance management |
US6980446B2 (en) | 2002-02-08 | 2005-12-27 | Sanken Electric Co., Ltd. | Circuit for starting power source apparatus |
US6870325B2 (en) | 2002-02-22 | 2005-03-22 | Oxley Developments Company Limited | Led drive circuit and method |
US7756896B1 (en) | 2002-03-11 | 2010-07-13 | Jp Morgan Chase Bank | System and method for multi-dimensional risk analysis |
US7072191B2 (en) | 2002-04-26 | 2006-07-04 | Fdk Corporation | Switching power source circuit for independent per cycle control of ON/OFF time ratio |
US20080174291A1 (en) | 2002-04-29 | 2008-07-24 | Emerson Energy Systems Ab | Power Supply System and Apparatus |
US20050253533A1 (en) | 2002-05-09 | 2005-11-17 | Color Kinetics Incorporated | Dimmable LED-based MR16 lighting apparatus methods |
US20050168492A1 (en) | 2002-05-28 | 2005-08-04 | Koninklijke Philips Electronics N.V. | Motion blur decrease in varying duty cycle |
US20040239262A1 (en) | 2002-05-28 | 2004-12-02 | Shigeru Ido | Electronic ballast for a discharge lamp |
US6657417B1 (en) | 2002-05-31 | 2003-12-02 | Champion Microelectronic Corp. | Power factor correction with carrier control and input voltage sensing |
US20030223255A1 (en) | 2002-05-31 | 2003-12-04 | Green Power Technologies Ltd. | Method and apparatus for active power factor correction with minimum input current distortion |
US6894471B2 (en) | 2002-05-31 | 2005-05-17 | St Microelectronics S.R.L. | Method of regulating the supply voltage of a load and related voltage regulator |
US6756772B2 (en) | 2002-07-08 | 2004-06-29 | Cogency Semiconductor Inc. | Dual-output direct current voltage converter |
US20040004465A1 (en) | 2002-07-08 | 2004-01-08 | Cogency Semiconductor Inc. | Dual-output direct current voltage converter |
US6860628B2 (en) | 2002-07-17 | 2005-03-01 | Jonas J. Robertson | LED replacement for fluorescent lighting |
US6781351B2 (en) | 2002-08-17 | 2004-08-24 | Supertex Inc. | AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics |
US6940733B2 (en) | 2002-08-22 | 2005-09-06 | Supertex, Inc. | Optimal control of wide conversion ratio switching converters |
US6724174B1 (en) | 2002-09-12 | 2004-04-20 | Linear Technology Corp. | Adjustable minimum peak inductor current level for burst mode in current-mode DC-DC regulators |
US6975523B2 (en) | 2002-10-16 | 2005-12-13 | Samsung Electronics Co., Ltd. | Power supply capable of protecting electric device circuit |
US20040085030A1 (en) | 2002-10-30 | 2004-05-06 | Benoit Laflamme | Multicolor lamp system |
US6727832B1 (en) | 2002-11-27 | 2004-04-27 | Cirrus Logic, Inc. | Data converters with digitally filtered pulse width modulation output stages and methods and systems using the same |
US6741123B1 (en) | 2002-12-26 | 2004-05-25 | Cirrus Logic, Inc. | Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same |
US6768655B1 (en) | 2003-02-03 | 2004-07-27 | System General Corp. | Discontinuous mode PFC controller having a power saving modulator and operation method thereof |
US20040169477A1 (en) | 2003-02-28 | 2004-09-02 | Naoki Yanai | Dimming-control lighting apparatus for incandescent electric lamp |
US20040232971A1 (en) | 2003-03-06 | 2004-11-25 | Denso Corporation | Electrically insulated switching element drive circuit |
EP1460775B8 (en) | 2003-03-18 | 2007-02-28 | POWER ONE ITALY S.p.A. | Lighting control with power line modem |
US7078963B1 (en) | 2003-03-21 | 2006-07-18 | D2Audio Corporation | Integrated PULSHI mode with shutdown |
US7075329B2 (en) | 2003-04-30 | 2006-07-11 | Analog Devices, Inc. | Signal isolators using micro-transformers |
US7126288B2 (en) | 2003-05-05 | 2006-10-24 | International Rectifier Corporation | Digital electronic ballast control apparatus and method |
US20040227571A1 (en) | 2003-05-12 | 2004-11-18 | Yasuji Kuribayashi | Power amplifier circuit |
US20040228116A1 (en) | 2003-05-13 | 2004-11-18 | Carroll Miller | Electroluminescent illumination for a magnetic compass |
US6956750B1 (en) | 2003-05-16 | 2005-10-18 | Iwatt Inc. | Power converter controller having event generator for detection of events and generation of digital error |
US20070055564A1 (en) | 2003-06-20 | 2007-03-08 | Fourman Clive M | System for facilitating management and organisational development processes |
US6944034B1 (en) | 2003-06-30 | 2005-09-13 | Iwatt Inc. | System and method for input current shaping in a power converter |
US7161816B2 (en) | 2003-06-30 | 2007-01-09 | Iwatt Inc. | System and method for input current shaping in a power converter |
US20060238136A1 (en) | 2003-07-02 | 2006-10-26 | Johnson Iii H F | Lamp and bulb for illumination and ambiance lighting |
US7345458B2 (en) | 2003-07-07 | 2008-03-18 | Nippon Telegraph And Telephone Corporation | Booster that utilizes energy output from a power supply unit |
US6839247B1 (en) | 2003-07-10 | 2005-01-04 | System General Corp. | PFC-PWM controller having a power saving means |
US20050197952A1 (en) | 2003-08-15 | 2005-09-08 | Providus Software Solutions, Inc. | Risk mitigation management |
US6933706B2 (en) | 2003-09-15 | 2005-08-23 | Semiconductor Components Industries, Llc | Method and circuit for optimizing power efficiency in a DC-DC converter |
US7233135B2 (en) | 2003-09-29 | 2007-06-19 | Murata Manufacturing Co., Ltd. | Ripple converter |
US6958920B2 (en) | 2003-10-02 | 2005-10-25 | Supertex, Inc. | Switching power converter and method of controlling output voltage thereof using predictive sensing of magnetic flux |
EP1528785A1 (en) | 2003-10-14 | 2005-05-04 | Archimede Elettronica S.r.l. | Device and method for controlling the color of a light source |
US20060116898A1 (en) | 2003-11-18 | 2006-06-01 | Peterson Gary E | Interactive risk management system and method with reputation risk management |
US20050156770A1 (en) | 2004-01-16 | 2005-07-21 | Melanson John L. | Jointly nonlinear delta sigma modulators |
US7034611B2 (en) | 2004-02-09 | 2006-04-25 | Texas Instruments Inc. | Multistage common mode feedback for improved linearity line drivers |
US20050184895A1 (en) | 2004-02-25 | 2005-08-25 | Nellcor Puritan Bennett Inc. | Multi-bit ADC with sigma-delta modulation |
US7246919B2 (en) | 2004-03-03 | 2007-07-24 | S.C. Johnson & Son, Inc. | LED light bulb with active ingredient emission |
US20080012502A1 (en) | 2004-03-15 | 2008-01-17 | Color Kinetics Incorporated | Led power control methods and apparatus |
US20050218838A1 (en) | 2004-03-15 | 2005-10-06 | Color Kinetics Incorporated | LED-based lighting network power control methods and apparatus |
US20060002110A1 (en) | 2004-03-15 | 2006-01-05 | Color Kinetics Incorporated | Methods and systems for providing lighting systems |
US7266001B1 (en) | 2004-03-19 | 2007-09-04 | Marvell International Ltd. | Method and apparatus for controlling power factor correction |
US20050222881A1 (en) | 2004-04-05 | 2005-10-06 | Garry Booker | Management work system and method |
US20050275354A1 (en) | 2004-06-10 | 2005-12-15 | Hausman Donald F Jr | Apparatus and methods for regulating delivery of electrical energy |
US20060022916A1 (en) | 2004-06-14 | 2006-02-02 | Natale Aiello | LED driving device with variable light intensity |
US7109791B1 (en) | 2004-07-09 | 2006-09-19 | Rf Micro Devices, Inc. | Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier |
US7088059B2 (en) | 2004-07-21 | 2006-08-08 | Boca Flasher | Modulated control circuit and method for current-limited dimming and color mixing of display and illumination systems |
US20060023002A1 (en) | 2004-08-02 | 2006-02-02 | Oki Electric Industry Co., Ltd. | Color balancing circuit for a display panel |
US20070103949A1 (en) | 2004-08-27 | 2007-05-10 | Sanken Electric Co., Ltd. | Power factor improving circuit |
US7710047B2 (en) | 2004-09-21 | 2010-05-04 | Exclara, Inc. | System and method for driving LED |
US7276861B1 (en) | 2004-09-21 | 2007-10-02 | Exclara, Inc. | System and method for driving LED |
US20070285031A1 (en) | 2004-09-21 | 2007-12-13 | Exclara Inc. | System and Method for Driving LED |
US7292013B1 (en) | 2004-09-24 | 2007-11-06 | Marvell International Ltd. | Circuits, systems, methods, and software for power factor correction and/or control |
US7394210B2 (en) | 2004-09-29 | 2008-07-01 | Tir Technology Lp | System and method for controlling luminaires |
US7459660B2 (en) * | 2004-10-05 | 2008-12-02 | Mediatek Incorporation | System and method for calibrating light emitting device |
US20060125420A1 (en) | 2004-12-06 | 2006-06-15 | Michael Boone | Candle emulation device |
US20080224635A1 (en) | 2004-12-20 | 2008-09-18 | Outside In (Cambridge) Limited | Lighting Apparatus and Method |
WO2006067521A1 (en) | 2004-12-20 | 2006-06-29 | Outside In (Cambridge) Limited | Lightning apparatus and method |
US7221130B2 (en) | 2005-01-05 | 2007-05-22 | Fyrestorm, Inc. | Switching power converter employing pulse frequency modulation control |
US7180250B1 (en) | 2005-01-25 | 2007-02-20 | Henry Michael Gannon | Triac-based, low voltage AC dimmer |
US20060184414A1 (en) | 2005-02-11 | 2006-08-17 | George Pappas | Business management tool |
US7102902B1 (en) | 2005-02-17 | 2006-09-05 | Ledtronics, Inc. | Dimmer circuit for LED |
US20060214603A1 (en) | 2005-03-22 | 2006-09-28 | In-Hwan Oh | Single-stage digital power converter for driving LEDs |
US7064531B1 (en) | 2005-03-31 | 2006-06-20 | Micrel, Inc. | PWM buck regulator with LDO standby mode |
US7375476B2 (en) | 2005-04-08 | 2008-05-20 | S.C. Johnson & Son, Inc. | Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices |
US20060226795A1 (en) | 2005-04-08 | 2006-10-12 | S.C. Johnson & Son, Inc. | Lighting device having a circuit including a plurality of light emitting diodes, and methods of controlling and calibrating lighting devices |
US20060261754A1 (en) | 2005-05-18 | 2006-11-23 | Samsung Electro-Mechanics Co., Ltd. | LED driving circuit having dimming circuit |
US7746671B2 (en) | 2005-05-23 | 2010-06-29 | Infineon Technologies Ag | Control circuit for a switch unit of a clocked power supply circuit, and resonance converter |
US7106603B1 (en) | 2005-05-23 | 2006-09-12 | Li Shin International Enterprise Corporation | Switch-mode self-coupling auxiliary power device |
WO2006135584A1 (en) | 2005-06-10 | 2006-12-21 | Rf Micro Devices, Inc. | Doherty amplifier configuration for a collector controlled power amplifier |
US20060285365A1 (en) | 2005-06-16 | 2006-12-21 | Active Semiconductors International Inc. | Primary side constant output current controller |
US7388764B2 (en) | 2005-06-16 | 2008-06-17 | Active-Semi International, Inc. | Primary side constant output current controller |
US20080130336A1 (en) | 2005-07-01 | 2008-06-05 | Yasutaka Taguchi | Power Supply Device |
US7145295B1 (en) | 2005-07-24 | 2006-12-05 | Aimtron Technology Corp. | Dimming control circuit for light-emitting diodes |
US20070024213A1 (en) | 2005-07-28 | 2007-02-01 | Synditec, Inc. | Pulsed current averaging controller with amplitude modulation and time division multiplexing for arrays of independent pluralities of light emitting diodes |
US20070029946A1 (en) | 2005-08-03 | 2007-02-08 | Yu Chung-Che | APPARATUS OF LIGHT SOURCE AND ADJUSTABLE CONTROL CIRCUIT FOR LEDs |
US20070040512A1 (en) | 2005-08-17 | 2007-02-22 | Tir Systems Ltd. | Digitally controlled luminaire system |
WO2007026170A3 (en) | 2005-09-03 | 2007-06-14 | Light Ltd E | Improvements to lighting systems |
US20070053182A1 (en) | 2005-09-07 | 2007-03-08 | Jonas Robertson | Combination fluorescent and LED lighting system |
US7545130B2 (en) | 2005-11-11 | 2009-06-09 | L&L Engineering, Llc | Non-linear controller for switching power supply |
US7099163B1 (en) | 2005-11-14 | 2006-08-29 | Bcd Semiconductor Manufacturing Limited | PWM controller with constant output power limit for a power supply |
US20070124615A1 (en) | 2005-11-29 | 2007-05-31 | Potentia Semiconductor Corporation | Standby arrangement for power supplies |
US20070126656A1 (en) | 2005-12-07 | 2007-06-07 | Industrial Technology Research Institute | Illumination brightness and color control system and method therefor |
US7804480B2 (en) | 2005-12-27 | 2010-09-28 | Lg Display Co., Ltd. | Hybrid backlight driving apparatus for liquid crystal display |
WO2007079362A1 (en) | 2005-12-30 | 2007-07-12 | Cirrus Logic, Inc. | Signal processing system with analog-to-digital converter using delta-sigma modulation having an internal stabilizer loop |
US7183957B1 (en) | 2005-12-30 | 2007-02-27 | Cirrus Logic, Inc. | Signal processing system with analog-to-digital converter using delta-sigma modulation having an internal stabilizer loop |
US7310244B2 (en) | 2006-01-25 | 2007-12-18 | System General Corp. | Primary side controlled switching regulator |
US20070182699A1 (en) | 2006-02-09 | 2007-08-09 | Samsung Electro-Mechanics Co., Ltd. | Field sequential color mode liquid crystal display |
US7511437B2 (en) | 2006-02-10 | 2009-03-31 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for high power factor controlled power delivery using a single switching stage per load |
US20080043504A1 (en) | 2006-08-16 | 2008-02-21 | On-Bright Electronics (Shanghai) Co., Ltd. | System and method for providing control for switch-mode power supply |
US20090067204A1 (en) | 2006-08-16 | 2009-03-12 | On-Bright Electronics (Shanghai ) Co., Ltd. | System and method for providing control for switch-mode power supply |
US20080054815A1 (en) | 2006-09-01 | 2008-03-06 | Broadcom Corporation | Single inductor serial-parallel LED driver |
US20100141317A1 (en) | 2006-10-11 | 2010-06-10 | Mitsubishi Electric Corporation | Spread-period clock generator |
US20080154679A1 (en) | 2006-11-03 | 2008-06-26 | Wade Claude E | Method and apparatus for a processing risk assessment and operational oversight framework |
US20080116818A1 (en) | 2006-11-21 | 2008-05-22 | Exclara Inc. | Time division modulation with average current regulation for independent control of arrays of light emitting diodes |
US7667986B2 (en) | 2006-12-01 | 2010-02-23 | Flextronics International Usa, Inc. | Power system with power converters having an adaptive controller |
US20080130322A1 (en) | 2006-12-01 | 2008-06-05 | Artusi Daniel A | Power system with power converters having an adaptive controller |
US20080232141A1 (en) | 2006-12-01 | 2008-09-25 | Artusi Daniel A | Power System with Power Converters Having an Adaptive Controller |
WO2008072160A1 (en) | 2006-12-13 | 2008-06-19 | Koninklijke Philips Electronics N.V. | Method for light emitting diode control and corresponding light sensor array, backlight and liquid crystal display |
US20080150433A1 (en) | 2006-12-26 | 2008-06-26 | Kabushiki Kaisha Toshiba | Backlight control unit and backlight control method |
US20080175029A1 (en) | 2007-01-18 | 2008-07-24 | Sang-Hwa Jung | Burst mode operation in a DC-DC converter |
US20080174372A1 (en) | 2007-01-19 | 2008-07-24 | Tucker John C | Multi-stage amplifier with multiple sets of fixed and variable voltage rails |
US20080192509A1 (en) | 2007-02-13 | 2008-08-14 | Dhuyvetter Timothy A | Dc-dc converter with isolation |
US7288902B1 (en) | 2007-03-12 | 2007-10-30 | Cirrus Logic, Inc. | Color variations in a dimmable lighting device with stable color temperature light sources |
US7804256B2 (en) | 2007-03-12 | 2010-09-28 | Cirrus Logic, Inc. | Power control system for current regulated light sources |
US20080239764A1 (en) | 2007-03-30 | 2008-10-02 | Cambridge Semiconductor Limited | Forward power converter controllers |
US20080259655A1 (en) | 2007-04-19 | 2008-10-23 | Da-Chun Wei | Switching-mode power converter and pulse-width-modulation control circuit with primary-side feedback control |
US7746043B2 (en) | 2007-05-02 | 2010-06-29 | Cirrus Logic, Inc. | Inductor flyback detection using switch gate change characteristic detection |
US7719248B1 (en) | 2007-05-02 | 2010-05-18 | Cirrus Logic, Inc. | Discontinuous conduction mode (DCM) using sensed current for a switch-mode converter |
US7719246B2 (en) | 2007-05-02 | 2010-05-18 | Cirrus Logic, Inc. | Power control system using a nonlinear delta-sigma modulator with nonlinear power conversion process modeling |
US20080278132A1 (en) | 2007-05-07 | 2008-11-13 | Kesterson John W | Digital Compensation For Cable Drop In A Primary Side Control Power Supply Controller |
WO2008152838A1 (en) | 2007-06-14 | 2008-12-18 | Sanken Electric Co., Ltd. | Ac-dc converter |
US20090070188A1 (en) | 2007-09-07 | 2009-03-12 | Certus Limited (Uk) | Portfolio and project risk assessment |
US20090147544A1 (en) | 2007-12-11 | 2009-06-11 | Melanson John L | Modulated transformer-coupled gate control signaling method and apparatus |
US20090174479A1 (en) | 2008-01-04 | 2009-07-09 | Texas Instruments Incorporated | High-voltage differential amplifier and method using low voltage amplifier and dynamic voltage selection |
US7750738B2 (en) | 2008-11-20 | 2010-07-06 | Infineon Technologies Ag | Process, voltage and temperature control for high-speed, low-power fixed and variable gain amplifiers based on MOSFET resistors |
US7777563B2 (en) | 2008-12-18 | 2010-08-17 | Freescale Semiconductor, Inc. | Spread spectrum pulse width modulation method and apparatus |
EP2204905A1 (en) | 2008-12-31 | 2010-07-07 | Cirrus Logic, Inc. | Electronic system having common mode voltage range enhancement |
Non-Patent Citations (168)
Title |
---|
"AN-H52 Application Note: HV9931 Unity Power Factor LED Lamp Driver" Mar. 7, 2007, Supertex Inc., Sunnyvale, CA, USA. |
"High Performance Power Factor Preregulator", Unitrode Products from Texas Instruments, SLUS382B, Jun. 1998, Revised Oct. 2005. |
"HV9931 Unity Power Factor LED Lamp Driver, Initial Release" 2005, Supertex Inc., Sunnyvale, CA USA. |
A. Prodic, Compensator Design and Stability Assessment for Fast Voltage Loops of Power Factor Correction Rectifiers, IEEE Transactions on Power Electronics, vol. 22, No. 5, Sep. 2007. |
A. Silva De Morais et al., A High Power Factor Ballast Using a Single Switch with Both Power Stages Integrated, IEEE Transactions on Power Electronics, vol. 21, No. 2, Mar. 2006. |
A.R. Seidel et al., A Practical Comparison Among High-Power-Factor Electronic Ballasts with Similar Ideas, IEEE Transactions on Industry Applications, vol. 41, No. 6, Nov.-Dec. 2005. |
Allegro Microsystems, A1442, "Low Voltage Full Bridge Brushless DC Motor Driver with Hall Commutation and Soft-Switching, and Reverse Battery, Short Circuit, and Thermal Shutdown Protection," Worcester MA, 2009. |
Analog Devices, "120 kHz Bandwidth, Low Distortion, Isolation Amplifier", AD215, Norwood, MA, 1996. |
Azoteq, IQS17 Family, IQ Switch®-ProxSense(TM) Series, Touch Sensor, Load Control and User Interface, IQS17 Datasheet V2.00.doc, Jan. 2007. |
Azoteq, IQS17 Family, IQ Switch®—ProxSense™ Series, Touch Sensor, Load Control and User Interface, IQS17 Datasheet V2.00.doc, Jan. 2007. |
B.A. Miwa et al., High Efficiency Power Factor Correction Using Interleaved Techniques, Applied Power Electronics Conference and Exposition, Seventh Annual Conference Proceedings, Feb. 23-27, 1992. |
Balogh, Laszlo, "Design and Application Guide for High Speed MOSFET Gate Drive Circuits" [Online] 2001, Texas Instruments, Inc., SEM-1400, Unitrode Power Supply Design Seminar, Topic II, TI literature No. SLUP133, XP002552367, Retrieved from the Internet: URL:htt/://focus.ti.com/lit/ml/slup169/slup169.pdf the whole document. |
Ben-Yaakov et al, "The Dynamics of a PWM Boost Converter with Resistive Input" IEEE Transactions on Industrial Electronics, IEEE Service Center, Piscataway, NJ, USA, vol. 46, No. 3, Jun. 1, 1999. |
Burr-Brown, ISO120 and ISO121, "Precision Los Cost Isolation Amplifier," Tucson AZ, Mar. 1992. |
Burr-Brown, ISO130, "High IMR, Low Cost Isolation Amplifier," SBOS220, US, Oct. 2001. |
C. Dilouie, Introducing the LED Driver, EC&M, Sep. 2004. |
C.M. De Oliviera Stein et al., A ZCT Auxiliary Communication Circuit for Interleaved Boost Converters Operating in Critical Conduction Mode, IEEE Transactions on Power Electronics, vol. 17, No. 6, Nov. 2002. |
Chromacity Shifts in High-Power White LED Systems due to Different Dimming Methods, Solid-State Lighting, http://www.Irc.rpi.edu/programs/solidstate/completedProjects.asp?ID=76, printed May 3, 2007. |
Color Temperature, www.sizes.com/units/color-temperature.htm, printed Mar. 27, 2007. |
D. Hausman, Lutron, RTISS-TE Operation, Real-Time Illumination Stability Systems for Trailing-Edge (Reverse Phase Control) Dimmers, v. 1.0 Dec. 2004. |
D. Hausman, Real-Time Illumination Stability Systems for Trailing-Edge (Reverse Phase Control) Dimmers, Technical White Paper, Lutron, version 1.0, Dec. 2004, http://www.lutron.com/technical-info/pdf/RTISS-TE.pdf. |
D. Maksimovic et al., "Switching Converters with Wide DC Conversion Range," Institute of Electrical and Electronic Engineer's (IEEE) Transactions on Power Electronics, Jan. 1991. |
D. Rand et al., Issues, Models and Solutions for Triac Modulated Phase Dimming of LED Lamps, Power Electronics Specialists Conference, 2007. |
D.K.W. Cheng et al., A New Improved Boost Converter with Ripple Free Input Current Using Coupled Inductors, Power Electronics and Variable Speed Drives, Sep. 21-23, 1998. |
Dallas Semiconductor, Maxim, "Charge-Pump and Step-Up DC-DC Converter Solutions for Powering White LEDs in Series or Parallel Connections," Apr. 23, 2002. |
Data Sheet LT3496 Triple Output LED Driver, 2007, Linear Technology Corporation, Milpitas, CA. |
Dustin Rand et al: "Issues, Models and Solutions for Triac Modulated Phase Dimming of LED Lamps" Power Electronics Specialists Conference, 2007. PESC 2007, IEEE, IEEE, P1, Jun. 1, 2007, pp. 1398-1404. |
Erickson, Robert W. et al, "Fundamentals of Power Electronics," Second Edition, Chapter 6, Boulder, CO, 2001. |
F. T. Wakabayashi et al., An Improved Design Procedure for LCC Resonant Filter of Dimmable Electronic Ballasts for Fluorescent Lamps, Based on Lamp Model, IEEE Transactions on Power Electronics, vol. 20, No. 2, Sep. 2005. |
F. Tao et al., "Single-Stage Power-Factor-Correction Electronic Ballast with a Wide Continuous Dimming Control for Fluorescent Lamps," IEEE Power Electronics Specialists Conference, vol. 2, 2001. |
Fairchild Semiconductor, Application Note 42030, Theory and Application of the ML4821 Average Current Mode PFC Controller, Oct. 25, 2000. |
Fairchild Semiconductor, Application Note 42030, Theory and Application of the ML4821 Average Currrent Mode PFC Controller, Aug. 1997. |
Fairchild Semiconductor, Application Note 42047 Power Factor Correction (PFC) Basics, Rev. 0.9.0 Aug. 19, 2004. |
Fairchild Semiconductor, Application Note 6004, 500W Power-Factor-Corrected (PFC) Converter Design with FAN4810, Rev. 1.0.1, Oct. 31, 2003. |
Fairchild Semiconductor, Application Note AN4121, Design of Power Factor Correction Circuit Using FAN7527B, Rev.1.0.1, May 30, 2002. |
Fairchild Semiconductor, FAN4800, Low Start-up Current PFC/PWM Controller Combos, Nov. 2006. |
Fairchild Semiconductor, FAN4810, Power Factor Correction Controller, Sep. 24, 2003. |
Fairchild Semiconductor, FAN4822, ZVA Average Current PFC Controller, Rev. 1.0.1 Aug. 10, 2001. |
Fairchild Semiconductor, FAN4822, ZVS Average Current PFC Controller, Aug. 10, 2001. |
Fairchild Semiconductor, FAN7527B, Power Factor Correction Controller, 2003. |
Fairchild Semiconductor, FAN7532, Ballast Controller, Rev. 1.0.2, Jun. 2006. |
Fairchild Semiconductor, FAN7544, Simple Ballast Controller, Rev. 1.0.0, 2004. |
Fairchild Semiconductor, FAN7711, Ballast Control IC, Rev. 1.0.2, Mar. 2007. |
Fairchild Semiconductor, KA7541, Simple Ballast Controller, Rev. 1.0.3, 2001. |
Fairchild Semiconductor, ML4812, Power Factor Controller, Rev. 1.0.4, May 31, 2001. |
Fairchild Semiconductor, ML4821, Power Factor Controller, Jun. 19, 2001. |
Fairchild Semiconductor, ML4821, Power Factor Controller, Rev. 1.0.2, Jun. 19, 2001. |
Freescale Semiconductor, AN1965, Design of Indirect Power Factor Correction Using 56F800/E, Jul. 2005. |
Freescale Semiconductor, AN3052, Implementing PFC Average Current Mode Control Using the MC9S12E128, Nov. 2005. |
Freescale Semiconductor, Inc., Dimmable Light Ballast with Power Factor Correction, Design Reference Manual, DRM067, Rev. 1, Dec. 2005. |
G. Yao et al., Soft Switching Circuit for Interleaved Boost Converters, IEEE Transactions on Power Electronics, vol. 22, No. 1, Jan. 2007. |
H. L. Cheng et al., A Novel Single-Stage High-Power-Factor Electronic Ballast with Symmetrical Topology, IEEE Transactions on Power Electronics, vol. 50, No. 4, Aug. 2003. |
H. Peng et al., Modeling of Quantization Effects in Digitally Controlled DC-DC Converters, IEEE Transactions on Power Electronics, vol. 22, No. 1, Jan. 2007. |
H. Wu et al., Single Phase Three-Level Power Factor Correction Circuit with Passive Lossless Snubber, IEEE Transactions on Power Electronics, vol. 17, No. 2, Mar. 2006. |
Hirota, Atsushi et al, "Analysis of Single Switch Delta-Sigma Modulated Pulse Space Modulation PFC Converter Effectively Using Switching Power Device," IEEE, US, 2002. |
http://toolbarpdf.com/docs/functions-and-features-of-inverters.html printed on Jan. 20, 2011. |
Infineon, CCM-PFC Standalone Power Factor Correction (PFC) Controller in Continuous Conduction Mode (CCM), Version 2.1, Feb. 6, 2007. |
International Preliminary Report on Patentability and Written Opinion for PCT/US2010/031978, dated Nov. 10, 2011. |
International Rectifier, Application Note AN-1077,PFC Converter Design with IR1150 One Cycle Control IC, rev. 2.3, Jun. 2005. |
International Rectifier, Data Sheet No. PD60143-O, Current Sensing Single Channel Driver, El Segundo, CA, dated Sep. 8, 2004. |
International Rectifier, Data Sheet No. PD60230 revC, IR1150(S)(PbF), uPFC One Cycle Control PFC IC Feb. 5, 2007. |
International Rectifier, Data Sheet PD60230 revC, Feb. 5, 2007. |
International Rectifier, IRAC1150-300W Demo Board, User's Guide, Rev 3.0, Aug. 2, 2005. |
International Search PCT/US2008/062387 dated Jan. 10, 2008. |
International Search Report and Written Opinion for PCT/US2008/062384 dated Jan. 14, 2008. |
International Search Report and Written Opinion, PCT US20080062378, dated Feb. 5, 2008. |
International Search Report and Written Opinion, PCT US20080062387, dated Feb. 5, 2008. |
International Search Report and Written Opinion, PCT US200900032358, dated Jan. 29, 2009. |
International Search Report and Written Opinion, PCT US20090032351, dated Jan. 29, 2009. |
International Search Report and Written Report PCT US20080062428 dated Feb. 5, 2008. |
International Search Report for PCT/US2008/051072, mailed Jun. 4, 2008. |
International Search Report for PCT/US2010/031978, dated Feb. 21, 2011. |
International Search Report PCT/GB2005/050228 dated Mar. 14, 2006. |
International Search Report PCT/GB2006/003259 dated Jan. 12, 2007. |
International Search Report PCT/US2008/056606 dated Dec. 3, 2008. |
International Search Report PCT/US2008/056608 dated Dec. 3, 2008. |
International Search Report PCT/US2008/056739 dated Dec. 3, 2008. |
International Search Report PCT/US2008/062381 dated Feb. 5, 2008. |
International Search Report PCT/US2008/062398 dated Feb. 5, 2008. |
J. A. Vilela Jr. et al., An Electronic Ballast with High Power Factor and Low Voltage Stress, IEEE Transactions on Industry Applications, vol. 41, No. 4, Jul./Aug. 2005. |
J. Qian et al., Charge Pump Power-Factor-Correction Technologies Part II: Ballast Applications, IEEE Transactions on Power Electronics, vol. 15, No. 1, Jan. 2000. |
J. Qian et al., New Charge Pump Power-Factor-Correction Electronic Ballast with a Wide Range of Line Input Voltage, IEEE Transactions on Power Electronics, vol. 14, No. 1, Jan. 1999. |
J. Turchi, Four Key Steps to Design a Continuous Conduction Mode PFC Stage Using the NCP1653, on Semiconductor, Publication Order No. AND184/D, Nov. 2004. |
J. Zhou et al., Novel Sampling Algorithm for DSP Controlled 2 kW PFC Converter, IEEE Transactions on Power Electronics, vol. 16, No. 2, Mar. 2001. |
J.W.F. Dorleijn et al., Standardisation of the Static Resistances of Fluorescent Lamp Cathodes and New Data for Preheating, Industry Applications Conference, vol. 1, Oct. 13, 2002-Oct. 18, 2002. |
K. Leung et al., "Dynamic Hysteresis Band Control of the Buck Converter with Fast Transient Response," IEEE Transactions on Circuits and Systems-II: Express Briefs, vol. 52, No. 7, Jul. 2005. |
K. Leung et al., "Use of State Trajectory Prediction in Hysteresis Control for Achieving Fast Transient Response of the Buck Converter," Circuits and Systems, 2003. ISCAS apos;03. Proceedings of the 2003 International Symposium, vol. 3, Issue , May 25-28, 2003 pp. III-439-III-442 vol. 3. |
L. Balogh et al., Power-Factor Correction with Interleaved Boost Converters in Continuous-Inductor-Current Mode, Eighth Annual Applied Power Electronics Conference and Exposition, 1993. APEC '93. Conference Proceedings, Mar. 7, 1993-Mar. 11, 1993. |
L. Gonthier et al., EN55015 Compliant 500W Dimmer with Low-Losses Symmetrical Switches, 2005 European Conference on Power Electronics and Applications, Sep. 2005. |
Light Dimmer Circuits, www.epanorama.net/documents/lights/lightdimmer.html, printed Mar. 26, 2007. |
Light Emitting Diode, http://en.wikipedia.org/wiki/Light-emitting-diode, printed Mar. 27, 2007. |
Linear Technology, "Single Switch PWM Controller with Auxiliary Boost Converter," LT1950 Datasheet, Linear Technology, Inc. Milpitas, CA, 2003. |
Linear Technology, 100 Watt LED Driver, Linear Technology, 2006. |
Linear Technology, LT1248, Power Factor Controller, Apr. 20, 2007. |
Lu et al., International Rectifier, Bridgeless PFC Implementation Using One Cycle Control Technique, 2005. |
M. Brkovic et al., "Automatic Current Shaper with Fast Output Regulation and Soft-Switching," S.15.C Power Converters, Telecommunications Energy Conference, 1993. |
M. K. Kazimierczuk et al., Electronic Ballast for Fluorescent Lamps, IEEETransactions on Power Electronics, vol. 8, No. 4, Oct. 1993. |
M. Madigan et al., Integrated High-Quality Rectifier-Regulators, IEEE Transactions on Industrial Electronics, vol. 46, No. 4, Aug. 1999. |
M. Ponce et al., High-Efficient Integrated Electronic Ballast for Compact Fluorescent Lamps, IEEE Transactions on Power Electronics, vol. 21, No. 2, Mar. 2006. |
M. Radecker et al., Application of Single-Transistor Smart-Power IC for Fluorescent Lamp Ballast, Thirty-Fourth Annual Industry Applications Conference IEEE, vol. 1, Oct. 3, 1999-Oct. 7, 1999. |
M. Rico-Secades et al., Low Cost Electronic Ballast for a 36-W Fluorescent Lamp Based on a Current-Mode-Controlled Boost Inverter for a 120-V DC Bus Power Distribution, IEEE Transactions on Power Electronics, vol. 21, No. 4, Jul. 2006. |
Mamano, Bob, "Current Sensing Solutions for Power Supply Designers", Unitrode Seminar Notes SEM1200, 1999. |
Megaman, D or S Dimming ESL, Product News, Mar. 15, 2007. |
National Lighting Product Information Program, Specifier Reports, "Dimming Electronic Ballasts," vol. 7, No. 3, Oct. 1999. |
News Release, Triple Output LED, LT3496, May 24, 2007. |
Noon, Jim "UC3855A/B High Performance Power Factor Preregulator", Texas Instruments, SLUA146A, May 1996, Revised Apr. 2004. |
NXP, TEA1750, GreenChip III SMPS control IC Product Data Sheet, Apr. 6, 2007. |
O. Garcia et al., High Efficiency PFC Converter to Meet EN61000-3-2 and A14, Proceedings of the 2002 IEEE International Symposium on Industrial Electronics, vol. 3, 2002. |
On Semconductor, NCP1606, Cost Effective Power Factor Controller, Mar. 2007. |
On Semiconductor, AND8123/D, Power Factor Correction Stages Operating in Critical Conduction Mode, Sep. 2003. |
On Semiconductor, MC33260, GreenLine Compact Power Factor Controller: Innovative Circuit for Cost Effective Solutions, Sep. 2005. |
On Semiconductor, NCP1605, Enhanced, High Voltage and Efficient Standby Mode, Power Factor Controller, Feb. 2007. |
On Semiconductor, NCP1654, Product Review, Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters, Mar. 2007. |
P. Green, A Ballast that can be Dimmed from a Domestic (Phase-Cut) Dimmer, IRPLCFL3 rev. b, International Rectifier, http://www.irf.com/technical-info/refdesigns/cfl-3.pdf, printed Mar. 24, 2007. |
P. Lee et al., Steady-State Analysis of an Interleaved Boost Converter with Coupled Inductors, IEEE Transactions on Industrial Electronics, vol. 47, No. 4, Aug. 2000. |
Partial International Search PCT/US2008/062387 dated Feb. 5, 2008. |
Philips, Application Note, 90W Resonant SMPS with TEA1610 SwingChip, AN99011, 1999. |
Power Integrations, Inc., "TOP200-4/14 TOPSwitch Family Three-terminal Off-line PWM Switch", XP-002524650, Jul. 1996, Sunnyvale, California. |
Prodic, A. et al, "Dead Zone Digital Controller for Improved Dynamic Response of Power Factor Preregulators," IEEE, 2003. |
Prodic, Aleksandar, "Digital Controller for High-Frequency Rectifiers with Power Factor Correction Suitable for On-Chip Implementation," IEEE, US, 2007. |
Q. Li et al., An Analysis of the ZVS Two-Inductor Boost Converter under Variable Frequency Operation, IEEE Transactions on Power Electronics, vol. 22, No. 1, Jan. 2007. |
Renesas Technology Releases Industry's First Critical-Conduction-Mode Power Factor Correction Control IC Implementing Interleaved Operation, Dec. 18, 2006. |
Renesas, Application Note R2A20111 EVB, PFC Control IC R2A20111 Evaluation Board, Feb. 2007. |
Renesas, HA16174P/FP, Power Factor Correction Controller IC, Jan. 6, 2006. |
S. Ben-Yaakov et al., Statics and Dynamics of Fluorescent Lamps Operating at High Frequency: Modeling and Simulation, IEEE Transactions on Industry Applications, vol. 38, No. 6, Nov.-Dec. 2002. |
S. Chan et al., Design and Implementation of Dimmable Electronic Ballast Based on Integrated Inductor, IEEE Transactions on Power Electronics, vol. 22, No. 1, Jan. 2007. |
S. Dunlap et al., Design of Delta-Sigma Modulated Switching Power Supply, Circuits & Systems, Proceedings of the 1998 IEEE International Symposium, 1998. |
S. Lee et al., A Novel Electrode Power Profiler for Dimmable Ballasts Using DC Link Voltage and Switching Frequency Controls, IEEE Transactions on Power Electronics, vol. 19, No. 3, May 2004. |
S. Lee et al., TRIAC Dimmable Ballast with Power Equalization, IEEE Transactions on Power Electronics, vol. 20, No. 6, Nov. 2005. |
S. Skogstad et al., A Proposed Stability Characterization and Verification Method for High-Order Single-Bit Delta-Sigma Modulators, Norchip Conference, Nov. 2006 http://folk.uio.no/savskogs/pub/A-Proposed-Stability-Characterization.pdf. |
S. T.S. Lee et al., Use of Saturable Inductor to Improve the Dimming Characteristics of Frequency-Controlled Dimmable Electronic Ballasts, IEEE Transactions on Power Electronics, vol. 19, No. 6, Nov. 2004. |
S. Zhou et al., "A High Efficiency, Soft Switching DC-DC Converter with Adaptive Current-Ripple Control for Portable Applications," IEEE Transactions on Circuits and Systems-II: Express Briefs, vol. 53, No. 4, Apr. 2006. |
Spiazzi G et al: "Analysis of a High-Power-Factor Electronic Ballast for High Brightness Light Emitting Diodes" Power Electronics Specialists, 2005 IEEE 36th Conference on June 12, 2005, Piscatawa, NJ USA, IEEE, Jun. 12, 2005, pp. 1494-1499. |
ST Microelectronics, AN993, Application Note, Electronic Ballast with PFC Using L6574 and L6561, May 2004. |
ST Microelectronics, L6574, CFL/TL Ballast Driver Preheat and Dimming, Sep. 2003. |
ST Microelectronics, Power Factor Corrector L6561, Jun. 2004. |
STMicroelectronics, L6563, Advanced Transition-Mode PFC Controller, Mar. 2007. |
Supertex Inc., 56W Off-line LED Driver, 120VAC with PFC, 160V, 350mA Load, Dimmer Switch Compatible, DN-H05, Feb. 2007. |
Supertex Inc., Buck-based LED Drivers Using the HV9910B, Application Note AN-H48, Dec. 28, 2007. |
Supertex Inc., HV9931 Unity Power Factor LED Lamp Driver, Application Note AN-H52, Mar. 7, 2007. |
T. Wu et al., Single-Stage Electronic Ballast with Dimming Feature and Unity Power Factor, IEEE Transactions on Power Electronics, vol. 13, No. 3, May 1998. |
Texas Instruments, Application Note SLUA321, Startup Current Transient of the Leading Edge Triggered PFC Controllers, Jul. 2004. |
Texas Instruments, Application Report SLUA308, UCC3817 Current Sense Transformer Evaluation, Feb. 2004. |
Texas Instruments, Application Report SLUA369B, 350-W, Two-Phase Interleaved PFC Pre-Regulator Design Review, Mar. 2007. |
Texas Instruments, Application Report SPRA902A, Average Current Mode Controlled Power Factor Correctiom Converter using TMS320LF2407A, Jul. 2005. |
Texas Instruments, Application Report, SLUA309A, Avoiding Audible Noise at Light Loads when using Leading Edge Triggered PFC Converters, Sep. 2004. |
Texas Instruments, Interleaving Continuous Conduction Mode PFC Controller, UCC28070, SLUS794C, Nov. 2007, revised Jun. 2009, Texas Instruments, Dallas TX. |
Texas Instruments, SLOS318F, "High-Speed, Low Noise, Fully-Differential I/O Amplifiers," THS4130 and THS4131, US, Jan. 2006. |
Texas Instruments, SLUS828B, "8-Pin Continuous Conduction Mode (CCM) PFC Controller", UCC28019A, US, revised Apr. 2009. |
Texas Instruments, Transition Mode PFC Controller, SLUS515D, Jul. 2005. |
Texas Instruments, UCC3817 BiCMOS Power Factor Preregulator Evaluation Board User's Guide, Nov. 2002. |
Unitrode Products From Texas Instruments, BiCMOS Power Factor Preregulator, Feb. 2006. |
Unitrode Products From Texas Instruments, High Performance Power Factor Preregulator, Oct. 2005. |
Unitrode Products From Texas Instruments, Programmable Output Power Factor Preregulator, Dec. 2004. |
Unitrode, Design Note DN-39E, Optimizing Performance in UC3854 Power Factor Correction Applications, Nov. 1994. |
UNITRODE, High Power-Factor Preregulator, Oct. 1994. |
Unitrode, L. Balogh, Design Note UC3854A/B and UC3855A/B Provide Power Limiting with Sinusoidal Input Current for PFC Front Ends, SLUA196A, Nov. 2001. |
V. Nguyen et al., "Tracking Control of Buck Converter Using Sliding-Mode with Adaptive Hysteresis," Power Electronics Specialists Conference, 1995. PESC apos; 95 Record., 26th Annual IEEE vol. 2, Issue , Jun. 18-22, 1995 pp. 1086-1093. |
W. Zhang et al., A New Duty Cycle Control Strategy for Power Factor Correction and FPGA Implementation, IEEE Transactions on Power Electronics, vol. 21, No. 6, Nov. 2006. |
Why Different Dimming Ranges? The Difference Between Measured and Perceived Light, 2000 http://www.lutron.com/ballast/pdf/LutronBallastpg3.pdf. |
Written Opinion of the International Searching Authority PCT/US2008/056606 dated Dec. 3, 2008. |
Written Opinion of the International Searching Authority PCT/US2008/056608 dated Dec. 3, 2008. |
Written Opinion of the International Searching Authority PCT/US2008/056739, Dec. 3, 2008. |
Written Opinion of the International Searching Authority PCT/US2008/062381 dated Feb. 5, 2008. |
Y. Ji et al., Compatibility Testing of Fluorescent Lamp and Ballast Systems, IEEE Transactions on Industry Applications, vol. 35, No. 6, Nov./Dec. 1999. |
Y. Ohno, Spectral Design Considerations for White LED Color Rendering, Final Manuscript, Optical Engineering, vol. 44, 111302 (2005). |
Yu, Zhenyu, 3.3V DSP for Digital Motor Control, Texas Instruments, Application Report SPRA550 dated Jun. 1999. |
Z. Lai et al., A Family of Power-Factor-Correction Controllers, Twelfth Annual Applied Power Electronics Conference and Exposition, vol. 1, Feb. 23, 1997-Feb. 27, 1997. |
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US9760875B2 (en) | 2012-04-05 | 2017-09-12 | Menolinx System Ltd. | Device and method for automatic billing of power consumption through street poles |
US20170223795A1 (en) * | 2013-03-14 | 2017-08-03 | Laurence P. Sadwick | Digital Dimmable Driver |
US9661697B2 (en) * | 2013-03-14 | 2017-05-23 | Laurence P. Sadwick | Digital dimmable driver |
US20140265935A1 (en) * | 2013-03-14 | 2014-09-18 | Laurence P. Sadwick | Digital Dimmable Driver |
US10339796B2 (en) | 2015-07-07 | 2019-07-02 | Ilumi Sulutions, Inc. | Wireless control device and methods thereof |
US10818164B2 (en) | 2015-07-07 | 2020-10-27 | Ilumi Solutions, Inc. | Wireless control device and methods thereof |
US11218579B2 (en) | 2015-07-07 | 2022-01-04 | Ilumi Solutions, Inc. | Wireless communication methods |
US11468764B2 (en) | 2015-07-07 | 2022-10-11 | Ilumi Solutions, Inc. | Wireless control device and methods thereof |
US20170354007A1 (en) * | 2016-06-06 | 2017-12-07 | General Electric Company | Temperature correction for energy measurement in a street lighting luminaire |
US20190222353A1 (en) * | 2018-01-18 | 2019-07-18 | Chin Pen Chang | Two bit error calibration device for 128 bit transfer and the method for performing the same |
US10630423B2 (en) * | 2018-01-18 | 2020-04-21 | Chin Pen Chang | Two bit error calibration device for 128 bit transfer and the method for performing the same |
US20210392729A1 (en) * | 2020-06-15 | 2021-12-16 | Zhuhai Shengchang Electronics Co., Ltd. | Voltage-regulating phase-cut dimmable power supply |
US11723129B2 (en) * | 2020-06-15 | 2023-08-08 | Zhuhai Shengchang Electronics Co., Ltd. | Voltage-regulating phase-cut dimmable power supply |
Also Published As
Publication number | Publication date |
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EP2425682A2 (en) | 2012-03-07 |
US20100277072A1 (en) | 2010-11-04 |
WO2010126765A2 (en) | 2010-11-04 |
WO2010126765A3 (en) | 2011-04-14 |
CN102282913B (en) | 2014-10-22 |
CN102282913A (en) | 2011-12-14 |
ES2713063T3 (en) | 2019-05-17 |
EP2425682B1 (en) | 2018-12-26 |
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